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Finding the Fourth Proportional to 520,146.92, 780,445.76 and 183,428.16

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Solution

The fourth proportional to 520,146.92, 780,445.76 and 183,428.16 is: 275,221.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,146.92 : 780,445.76 = 183,428.16 : x
  2. Step 2: Convert to fraction form
    520,146.92/780,445.76 = 183,428.16/x
  3. Step 3: Cross multiply
    520,146.92x = 780,445.76 × 183,428.16
  4. Step 4: Simplify right side
    520,146.92x = 143,155,728,819.46
  5. Step 5: Solve for x
    x = 143,155,728,819.46/520,146.92
  6. Step 6: Final answer
    x = 275,221.72

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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.