Home / 391,520,318.32-540,145,120.80-224,167,139.28

Finding the Fourth Proportional to 391,520,318.32, 540,145,120.80 and 224,167,139.28

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Solution

The fourth proportional to 391,520,318.32, 540,145,120.80 and 224,167,139.28 is: 309,263,097.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,520,318.32 : 540,145,120.80 = 224,167,139.28 : x
  2. Step 2: Convert to fraction form
    391,520,318.32/540,145,120.80 = 224,167,139.28/x
  3. Step 3: Cross multiply
    391,520,318.32x = 540,145,120.80 × 224,167,139.28
  4. Step 4: Simplify right side
    391,520,318.32x = 121,082,786,525,786,016
  5. Step 5: Solve for x
    x = 121,082,786,525,786,016/391,520,318.32
  6. Step 6: Final answer
    x = 309,263,097.88

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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.