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Finding the Fourth Proportional to 261,656,523.20, 392,484,784.80 and 159,367,908.80

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Solution

The fourth proportional to 261,656,523.20, 392,484,784.80 and 159,367,908.80 is: 239,051,863.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,656,523.20 : 392,484,784.80 = 159,367,908.80 : x
  2. Step 2: Convert to fraction form
    261,656,523.20/392,484,784.80 = 159,367,908.80/x
  3. Step 3: Cross multiply
    261,656,523.20x = 392,484,784.80 × 159,367,908.80
  4. Step 4: Simplify right side
    261,656,523.20x = 62,549,479,389,394,032
  5. Step 5: Solve for x
    x = 62,549,479,389,394,032/261,656,523.20
  6. Step 6: Final answer
    x = 239,051,863.20

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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.