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Finding the Fourth Proportional to 559,166.90, 838,750.35 and 138,442.78

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Solution

The fourth proportional to 559,166.90, 838,750.35 and 138,442.78 is: 207,664.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,166.90 : 838,750.35 = 138,442.78 : x
  2. Step 2: Convert to fraction form
    559,166.90/838,750.35 = 138,442.78/x
  3. Step 3: Cross multiply
    559,166.90x = 838,750.35 × 138,442.78
  4. Step 4: Simplify right side
    559,166.90x = 116,118,930,179.97
  5. Step 5: Solve for x
    x = 116,118,930,179.97/559,166.90
  6. Step 6: Final answer
    x = 207,664.17

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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.