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Finding the Fourth Proportional to 408,909.80, 613,595.10 and 159,559.40

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Solution

The fourth proportional to 408,909.80, 613,595.10 and 159,559.40 is: 239,429.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,909.80 : 613,595.10 = 159,559.40 : x
  2. Step 2: Convert to fraction form
    408,909.80/613,595.10 = 159,559.40/x
  3. Step 3: Cross multiply
    408,909.80x = 613,595.10 × 159,559.40
  4. Step 4: Simplify right side
    408,909.80x = 97,904,865,998.94
  5. Step 5: Solve for x
    x = 97,904,865,998.94/408,909.80
  6. Step 6: Final answer
    x = 239,429.00

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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.