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Finding the Fourth Proportional to 521,015.14, 781,522.66 and 147,038.14

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Solution

The fourth proportional to 521,015.14, 781,522.66 and 147,038.14 is: 220,557.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,015.14 : 781,522.66 = 147,038.14 : x
  2. Step 2: Convert to fraction form
    521,015.14/781,522.66 = 147,038.14/x
  3. Step 3: Cross multiply
    521,015.14x = 781,522.66 × 147,038.14
  4. Step 4: Simplify right side
    521,015.14x = 114,913,638,294.25
  5. Step 5: Solve for x
    x = 114,913,638,294.25/521,015.14
  6. Step 6: Final answer
    x = 220,557.20

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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.