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Finding the Fourth Proportional to 611,793.10, 917,689.65 and 162,583.30

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Solution

The fourth proportional to 611,793.10, 917,689.65 and 162,583.30 is: 243,874.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,793.10 : 917,689.65 = 162,583.30 : x
  2. Step 2: Convert to fraction form
    611,793.10/917,689.65 = 162,583.30/x
  3. Step 3: Cross multiply
    611,793.10x = 917,689.65 × 162,583.30
  4. Step 4: Simplify right side
    611,793.10x = 149,201,011,672.85
  5. Step 5: Solve for x
    x = 149,201,011,672.85/611,793.10
  6. Step 6: Final answer
    x = 243,874.95

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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.