Home / 252,320.39-378,416.13-74,785.88

Finding the Fourth Proportional to 252,320.39, 378,416.13 and 74,785.88

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Solution

The fourth proportional to 252,320.39, 378,416.13 and 74,785.88 is: 112,159.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,320.39 : 378,416.13 = 74,785.88 : x
  2. Step 2: Convert to fraction form
    252,320.39/378,416.13 = 74,785.88/x
  3. Step 3: Cross multiply
    252,320.39x = 378,416.13 × 74,785.88
  4. Step 4: Simplify right side
    252,320.39x = 28,300,183,288.24
  5. Step 5: Solve for x
    x = 28,300,183,288.24/252,320.39
  6. Step 6: Final answer
    x = 112,159.72

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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.