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Finding the Fourth Proportional to 251,478.60, 347,042.92 and 136,759.70

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Solution

The fourth proportional to 251,478.60, 347,042.92 and 136,759.70 is: 188,729.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,478.60 : 347,042.92 = 136,759.70 : x
  2. Step 2: Convert to fraction form
    251,478.60/347,042.92 = 136,759.70/x
  3. Step 3: Cross multiply
    251,478.60x = 347,042.92 × 136,759.70
  4. Step 4: Simplify right side
    251,478.60x = 47,461,486,152.03
  5. Step 5: Solve for x
    x = 47,461,486,152.03/251,478.60
  6. Step 6: Final answer
    x = 188,729.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.