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Finding the Fourth Proportional to 408,983,368.80, 613,475,053.20 and 132,634,048.80

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Solution

The fourth proportional to 408,983,368.80, 613,475,053.20 and 132,634,048.80 is: 198,951,073.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,983,368.80 : 613,475,053.20 = 132,634,048.80 : x
  2. Step 2: Convert to fraction form
    408,983,368.80/613,475,053.20 = 132,634,048.80/x
  3. Step 3: Cross multiply
    408,983,368.80x = 613,475,053.20 × 132,634,048.80
  4. Step 4: Simplify right side
    408,983,368.80x = 81,367,680,143,711,408
  5. Step 5: Solve for x
    x = 81,367,680,143,711,408/408,983,368.80
  6. Step 6: Final answer
    x = 198,951,073.20

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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.