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Finding the Fourth Proportional to 605,814.40, 908,721.60 and 156,534.40

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Solution

The fourth proportional to 605,814.40, 908,721.60 and 156,534.40 is: 234,801.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,814.40 : 908,721.60 = 156,534.40 : x
  2. Step 2: Convert to fraction form
    605,814.40/908,721.60 = 156,534.40/x
  3. Step 3: Cross multiply
    605,814.40x = 908,721.60 × 156,534.40
  4. Step 4: Simplify right side
    605,814.40x = 142,246,190,423.04
  5. Step 5: Solve for x
    x = 142,246,190,423.04/605,814.40
  6. Step 6: Final answer
    x = 234,801.60

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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.