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Finding the Fourth Proportional to 292,001.70, 438,002.55 and 125,789.70

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Solution

The fourth proportional to 292,001.70, 438,002.55 and 125,789.70 is: 188,684.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,001.70 : 438,002.55 = 125,789.70 : x
  2. Step 2: Convert to fraction form
    292,001.70/438,002.55 = 125,789.70/x
  3. Step 3: Cross multiply
    292,001.70x = 438,002.55 × 125,789.70
  4. Step 4: Simplify right side
    292,001.70x = 55,096,209,363.74
  5. Step 5: Solve for x
    x = 55,096,209,363.74/292,001.70
  6. Step 6: Final answer
    x = 188,684.55

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1.5x scale

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.