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Finding the Fourth Proportional to 279,008.10, 418,512.15 and 101,520.90

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Solution

The fourth proportional to 279,008.10, 418,512.15 and 101,520.90 is: 152,281.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,008.10 : 418,512.15 = 101,520.90 : x
  2. Step 2: Convert to fraction form
    279,008.10/418,512.15 = 101,520.90/x
  3. Step 3: Cross multiply
    279,008.10x = 418,512.15 × 101,520.90
  4. Step 4: Simplify right side
    279,008.10x = 42,487,730,128.94
  5. Step 5: Solve for x
    x = 42,487,730,128.94/279,008.10
  6. Step 6: Final answer
    x = 152,281.35

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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.