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Finding the Fourth Proportional to 608,511.80, 912,897.30 and 187,830.20

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Solution

The fourth proportional to 608,511.80, 912,897.30 and 187,830.20 is: 281,785.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,511.80 : 912,897.30 = 187,830.20 : x
  2. Step 2: Convert to fraction form
    608,511.80/912,897.30 = 187,830.20/x
  3. Step 3: Cross multiply
    608,511.80x = 912,897.30 × 187,830.20
  4. Step 4: Simplify right side
    608,511.80x = 171,469,682,438.46
  5. Step 5: Solve for x
    x = 171,469,682,438.46/608,511.80
  6. Step 6: Final answer
    x = 281,785.30

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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.