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Finding the Fourth Proportional to 438,149.80, 656,706.30 and 185,429.80

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Solution

The fourth proportional to 438,149.80, 656,706.30 and 185,429.80 is: 277,925.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,149.80 : 656,706.30 = 185,429.80 : x
  2. Step 2: Convert to fraction form
    438,149.80/656,706.30 = 185,429.80/x
  3. Step 3: Cross multiply
    438,149.80x = 656,706.30 × 185,429.80
  4. Step 4: Simplify right side
    438,149.80x = 121,772,917,867.74
  5. Step 5: Solve for x
    x = 121,772,917,867.74/438,149.80
  6. Step 6: Final answer
    x = 277,925.31

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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.