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Finding the Fourth Proportional to 521,019.30, 781,572.15 and 166,023.30

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Solution

The fourth proportional to 521,019.30, 781,572.15 and 166,023.30 is: 249,048.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,019.30 : 781,572.15 = 166,023.30 : x
  2. Step 2: Convert to fraction form
    521,019.30/781,572.15 = 166,023.30/x
  3. Step 3: Cross multiply
    521,019.30x = 781,572.15 × 166,023.30
  4. Step 4: Simplify right side
    521,019.30x = 129,759,187,531.10
  5. Step 5: Solve for x
    x = 129,759,187,531.10/521,019.30
  6. Step 6: Final answer
    x = 249,048.72

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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.