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Finding the Fourth Proportional to 251,937.03, 347,657.15 and 138,759.78

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Solution

The fourth proportional to 251,937.03, 347,657.15 and 138,759.78 is: 191,479.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,937.03 : 347,657.15 = 138,759.78 : x
  2. Step 2: Convert to fraction form
    251,937.03/347,657.15 = 138,759.78/x
  3. Step 3: Cross multiply
    251,937.03x = 347,657.15 × 138,759.78
  4. Step 4: Simplify right side
    251,937.03x = 48,240,828,955.63
  5. Step 5: Solve for x
    x = 48,240,828,955.63/251,937.03
  6. Step 6: Final answer
    x = 191,479.71

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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.