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Finding the Fourth Proportional to 251,007.75, 346,393.13 and 137,832.93

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Solution

The fourth proportional to 251,007.75, 346,393.13 and 137,832.93 is: 190,210.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,007.75 : 346,393.13 = 137,832.93 : x
  2. Step 2: Convert to fraction form
    251,007.75/346,393.13 = 137,832.93/x
  3. Step 3: Cross multiply
    251,007.75x = 346,393.13 × 137,832.93
  4. Step 4: Simplify right side
    251,007.75x = 47,744,379,350.61
  5. Step 5: Solve for x
    x = 47,744,379,350.61/251,007.75
  6. Step 6: Final answer
    x = 190,210.78

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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.