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Finding the Fourth Proportional to 388,635,344.80, 582,953,017.20 and 101,421,008.80

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Solution

The fourth proportional to 388,635,344.80, 582,953,017.20 and 101,421,008.80 is: 152,131,513.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,635,344.80 : 582,953,017.20 = 101,421,008.80 : x
  2. Step 2: Convert to fraction form
    388,635,344.80/582,953,017.20 = 101,421,008.80/x
  3. Step 3: Cross multiply
    388,635,344.80x = 582,953,017.20 × 101,421,008.80
  4. Step 4: Simplify right side
    388,635,344.80x = 59,123,683,087,427,752
  5. Step 5: Solve for x
    x = 59,123,683,087,427,752/388,635,344.80
  6. Step 6: Final answer
    x = 152,131,513.20

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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.