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Finding the Fourth Proportional to 251,149.59, 346,592.21 and 136,432.80

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Solution

The fourth proportional to 251,149.59, 346,592.21 and 136,432.80 is: 188,280.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,149.59 : 346,592.21 = 136,432.80 : x
  2. Step 2: Convert to fraction form
    251,149.59/346,592.21 = 136,432.80/x
  3. Step 3: Cross multiply
    251,149.59x = 346,592.21 × 136,432.80
  4. Step 4: Simplify right side
    251,149.59x = 47,286,544,986.32
  5. Step 5: Solve for x
    x = 47,286,544,986.32/251,149.59
  6. Step 6: Final answer
    x = 188,280.40

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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.