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Finding the Fourth Proportional to 251,857.40, 377,785.69 and 172,731.74

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Solution

The fourth proportional to 251,857.40, 377,785.69 and 172,731.74 is: 259,097.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,857.40 : 377,785.69 = 172,731.74 : x
  2. Step 2: Convert to fraction form
    251,857.40/377,785.69 = 172,731.74/x
  3. Step 3: Cross multiply
    251,857.40x = 377,785.69 × 172,731.74
  4. Step 4: Simplify right side
    251,857.40x = 65,255,577,260.04
  5. Step 5: Solve for x
    x = 65,255,577,260.04/251,857.40
  6. Step 6: Final answer
    x = 259,097.32

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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.