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Finding the Fourth Proportional to 521,002.13, 781,503.19 and 127,018.13

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Solution

The fourth proportional to 521,002.13, 781,503.19 and 127,018.13 is: 190,527.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,002.13 : 781,503.19 = 127,018.13 : x
  2. Step 2: Convert to fraction form
    521,002.13/781,503.19 = 127,018.13/x
  3. Step 3: Cross multiply
    521,002.13x = 781,503.19 × 127,018.13
  4. Step 4: Simplify right side
    521,002.13x = 99,265,069,557.77
  5. Step 5: Solve for x
    x = 99,265,069,557.77/521,002.13
  6. Step 6: Final answer
    x = 190,527.19

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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.