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Finding the Fourth Proportional to 605,539.23, 908,304.28 and 156,221.90

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Solution

The fourth proportional to 605,539.23, 908,304.28 and 156,221.90 is: 234,331.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,539.23 : 908,304.28 = 156,221.90 : x
  2. Step 2: Convert to fraction form
    605,539.23/908,304.28 = 156,221.90/x
  3. Step 3: Cross multiply
    605,539.23x = 908,304.28 × 156,221.90
  4. Step 4: Simplify right side
    605,539.23x = 141,897,019,752.55
  5. Step 5: Solve for x
    x = 141,897,019,752.55/605,539.23
  6. Step 6: Final answer
    x = 234,331.67

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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.