Home / 287,789,414.10-431,684,121.15-200,113,458.90

Finding the Fourth Proportional to 287,789,414.10, 431,684,121.15 and 200,113,458.90

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Solution

The fourth proportional to 287,789,414.10, 431,684,121.15 and 200,113,458.90 is: 300,170,188.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,789,414.10 : 431,684,121.15 = 200,113,458.90 : x
  2. Step 2: Convert to fraction form
    287,789,414.10/431,684,121.15 = 200,113,458.90/x
  3. Step 3: Cross multiply
    287,789,414.10x = 431,684,121.15 × 200,113,458.90
  4. Step 4: Simplify right side
    287,789,414.10x = 86,385,802,635,533,136
  5. Step 5: Solve for x
    x = 86,385,802,635,533,136/287,789,414.10
  6. Step 6: Final answer
    x = 300,170,188.35

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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.