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Finding the Fourth Proportional to 290,321,998.80, 435,482,998.20 and 108,545,557.20

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Solution

The fourth proportional to 290,321,998.80, 435,482,998.20 and 108,545,557.20 is: 162,818,335.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,321,998.80 : 435,482,998.20 = 108,545,557.20 : x
  2. Step 2: Convert to fraction form
    290,321,998.80/435,482,998.20 = 108,545,557.20/x
  3. Step 3: Cross multiply
    290,321,998.80x = 435,482,998.20 × 108,545,557.20
  4. Step 4: Simplify right side
    290,321,998.80x = 47,269,744,690,745,600
  5. Step 5: Solve for x
    x = 47,269,744,690,745,600/290,321,998.80
  6. Step 6: Final answer
    x = 162,818,335.80

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1.5x scale

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.