Home / 310,443.32-428,447.18-172,635.91

Finding the Fourth Proportional to 310,443.32, 428,447.18 and 172,635.91

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Solution

The fourth proportional to 310,443.32, 428,447.18 and 172,635.91 is: 238,257.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,443.32 : 428,447.18 = 172,635.91 : x
  2. Step 2: Convert to fraction form
    310,443.32/428,447.18 = 172,635.91/x
  3. Step 3: Cross multiply
    310,443.32x = 428,447.18 × 172,635.91
  4. Step 4: Simplify right side
    310,443.32x = 73,965,368,166.71
  5. Step 5: Solve for x
    x = 73,965,368,166.71/310,443.32
  6. Step 6: Final answer
    x = 238,257.24

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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.