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Finding the Fourth Proportional to 385,772.20, 578,658.30 and 101,462.20

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Solution

The fourth proportional to 385,772.20, 578,658.30 and 101,462.20 is: 152,193.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,772.20 : 578,658.30 = 101,462.20 : x
  2. Step 2: Convert to fraction form
    385,772.20/578,658.30 = 101,462.20/x
  3. Step 3: Cross multiply
    385,772.20x = 578,658.30 × 101,462.20
  4. Step 4: Simplify right side
    385,772.20x = 58,711,944,166.26
  5. Step 5: Solve for x
    x = 58,711,944,166.26/385,772.20
  6. Step 6: Final answer
    x = 152,193.30

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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.