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Finding the Fourth Proportional to 552,856.80, 829,285.20 and 272,920.80

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Solution

The fourth proportional to 552,856.80, 829,285.20 and 272,920.80 is: 409,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,856.80 : 829,285.20 = 272,920.80 : x
  2. Step 2: Convert to fraction form
    552,856.80/829,285.20 = 272,920.80/x
  3. Step 3: Cross multiply
    552,856.80x = 829,285.20 × 272,920.80
  4. Step 4: Simplify right side
    552,856.80x = 226,329,180,212.16
  5. Step 5: Solve for x
    x = 226,329,180,212.16/552,856.80
  6. Step 6: Final answer
    x = 409,381.20

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Similar ratio
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1.5x scale

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.