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Finding the Fourth Proportional to 439,817.40, 659,726.10 and 144,329.40

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Solution

The fourth proportional to 439,817.40, 659,726.10 and 144,329.40 is: 216,494.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,817.40 : 659,726.10 = 144,329.40 : x
  2. Step 2: Convert to fraction form
    439,817.40/659,726.10 = 144,329.40/x
  3. Step 3: Cross multiply
    439,817.40x = 659,726.10 × 144,329.40
  4. Step 4: Simplify right side
    439,817.40x = 95,217,872,177.34
  5. Step 5: Solve for x
    x = 95,217,872,177.34/439,817.40
  6. Step 6: Final answer
    x = 216,494.10

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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.