Home / 315,378,879,312.76-435,217,180,211.49-178,198,760,248.72

Finding the Fourth Proportional to 315,378,879,312.76, 435,217,180,211.49 and 178,198,760,248.72

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Solution

The fourth proportional to 315,378,879,312.76, 435,217,180,211.49 and 178,198,760,248.72 is: 245,911,083,588.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,378,879,312.76 : 435,217,180,211.49 = 178,198,760,248.72 : x
  2. Step 2: Convert to fraction form
    315,378,879,312.76/435,217,180,211.49 = 178,198,760,248.72/x
  3. Step 3: Cross multiply
    315,378,879,312.76x = 435,217,180,211.49 × 178,198,760,248.72
  4. Step 4: Simplify right side
    315,378,879,312.76x = 77,555,161,952,631,266,476,032
  5. Step 5: Solve for x
    x = 77,555,161,952,631,266,476,032/315,378,879,312.76
  6. Step 6: Final answer
    x = 245,911,083,588.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.