Home / 358,638,469.20-537,957,703.80-213,519,646.80

Finding the Fourth Proportional to 358,638,469.20, 537,957,703.80 and 213,519,646.80

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Solution

The fourth proportional to 358,638,469.20, 537,957,703.80 and 213,519,646.80 is: 320,279,470.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,638,469.20 : 537,957,703.80 = 213,519,646.80 : x
  2. Step 2: Convert to fraction form
    358,638,469.20/537,957,703.80 = 213,519,646.80/x
  3. Step 3: Cross multiply
    358,638,469.20x = 537,957,703.80 × 213,519,646.80
  4. Step 4: Simplify right side
    358,638,469.20x = 114,864,538,908,715,008
  5. Step 5: Solve for x
    x = 114,864,538,908,715,008/358,638,469.20
  6. Step 6: Final answer
    x = 320,279,470.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.