Home / 320,929.85-442,897.03-177,689.89

Finding the Fourth Proportional to 320,929.85, 442,897.03 and 177,689.89

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Solution

The fourth proportional to 320,929.85, 442,897.03 and 177,689.89 is: 245,219.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,929.85 : 442,897.03 = 177,689.89 : x
  2. Step 2: Convert to fraction form
    320,929.85/442,897.03 = 177,689.89/x
  3. Step 3: Cross multiply
    320,929.85x = 442,897.03 × 177,689.89
  4. Step 4: Simplify right side
    320,929.85x = 78,698,321,826.96
  5. Step 5: Solve for x
    x = 78,698,321,826.96/320,929.85
  6. Step 6: Final answer
    x = 245,219.70

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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.