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Finding the Fourth Proportional to 419,411.48, 629,387.88 and 153,149.70

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Solution

The fourth proportional to 419,411.48, 629,387.88 and 153,149.70 is: 229,823.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,411.48 : 629,387.88 = 153,149.70 : x
  2. Step 2: Convert to fraction form
    419,411.48/629,387.88 = 153,149.70/x
  3. Step 3: Cross multiply
    419,411.48x = 629,387.88 × 153,149.70
  4. Step 4: Simplify right side
    419,411.48x = 96,390,565,005.64
  5. Step 5: Solve for x
    x = 96,390,565,005.64/419,411.48
  6. Step 6: Final answer
    x = 229,823.38

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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.