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Finding the Fourth Proportional to 658,510.40, 987,808.80 and 185,211.20

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Solution

The fourth proportional to 658,510.40, 987,808.80 and 185,211.20 is: 277,828.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,510.40 : 987,808.80 = 185,211.20 : x
  2. Step 2: Convert to fraction form
    658,510.40/987,808.80 = 185,211.20/x
  3. Step 3: Cross multiply
    658,510.40x = 987,808.80 × 185,211.20
  4. Step 4: Simplify right side
    658,510.40x = 182,953,253,218.56
  5. Step 5: Solve for x
    x = 182,953,253,218.56/658,510.40
  6. Step 6: Final answer
    x = 277,828.95

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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.