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Finding the Fourth Proportional to 332,145.40, 498,282.90 and 142,605.40

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Solution

The fourth proportional to 332,145.40, 498,282.90 and 142,605.40 is: 213,935.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,145.40 : 498,282.90 = 142,605.40 : x
  2. Step 2: Convert to fraction form
    332,145.40/498,282.90 = 142,605.40/x
  3. Step 3: Cross multiply
    332,145.40x = 498,282.90 × 142,605.40
  4. Step 4: Simplify right side
    332,145.40x = 71,057,832,267.66
  5. Step 5: Solve for x
    x = 71,057,832,267.66/332,145.40
  6. Step 6: Final answer
    x = 213,935.92

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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.