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Finding the Fourth Proportional to 219,095.30, 328,902.15 and 124,400.90

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Solution

The fourth proportional to 219,095.30, 328,902.15 and 124,400.90 is: 186,748.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,095.30 : 328,902.15 = 124,400.90 : x
  2. Step 2: Convert to fraction form
    219,095.30/328,902.15 = 124,400.90/x
  3. Step 3: Cross multiply
    219,095.30x = 328,902.15 × 124,400.90
  4. Step 4: Simplify right side
    219,095.30x = 40,915,723,471.94
  5. Step 5: Solve for x
    x = 40,915,723,471.94/219,095.30
  6. Step 6: Final answer
    x = 186,748.52

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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.