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Finding the Fourth Proportional to 239,885.40, 359,871.30 and 99,658.20

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Solution

The fourth proportional to 239,885.40, 359,871.30 and 99,658.20 is: 149,505.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,885.40 : 359,871.30 = 99,658.20 : x
  2. Step 2: Convert to fraction form
    239,885.40/359,871.30 = 99,658.20/x
  3. Step 3: Cross multiply
    239,885.40x = 359,871.30 × 99,658.20
  4. Step 4: Simplify right side
    239,885.40x = 35,864,125,989.66
  5. Step 5: Solve for x
    x = 35,864,125,989.66/239,885.40
  6. Step 6: Final answer
    x = 149,505.25

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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.