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Finding the Fourth Proportional to 400,425.98, 600,646.48 and 187,135.36

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Solution

The fourth proportional to 400,425.98, 600,646.48 and 187,135.36 is: 280,706.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,425.98 : 600,646.48 = 187,135.36 : x
  2. Step 2: Convert to fraction form
    400,425.98/600,646.48 = 187,135.36/x
  3. Step 3: Cross multiply
    400,425.98x = 600,646.48 × 187,135.36
  4. Step 4: Simplify right side
    400,425.98x = 112,402,195,267.53
  5. Step 5: Solve for x
    x = 112,402,195,267.53/400,425.98
  6. Step 6: Final answer
    x = 280,706.55

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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.