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Finding the Fourth Proportional to 559,168.90, 838,753.35 and 138,444.78

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Solution

The fourth proportional to 559,168.90, 838,753.35 and 138,444.78 is: 207,667.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,168.90 : 838,753.35 = 138,444.78 : x
  2. Step 2: Convert to fraction form
    559,168.90/838,753.35 = 138,444.78/x
  3. Step 3: Cross multiply
    559,168.90x = 838,753.35 × 138,444.78
  4. Step 4: Simplify right side
    559,168.90x = 116,121,023,015.01
  5. Step 5: Solve for x
    x = 116,121,023,015.01/559,168.90
  6. Step 6: Final answer
    x = 207,667.17

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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.