Home / 485,330.30-669,758.06-281,501.90

Finding the Fourth Proportional to 485,330.30, 669,758.06 and 281,501.90

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Solution

The fourth proportional to 485,330.30, 669,758.06 and 281,501.90 is: 388,473.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,330.30 : 669,758.06 = 281,501.90 : x
  2. Step 2: Convert to fraction form
    485,330.30/669,758.06 = 281,501.90/x
  3. Step 3: Cross multiply
    485,330.30x = 669,758.06 × 281,501.90
  4. Step 4: Simplify right side
    485,330.30x = 188,538,161,674.01
  5. Step 5: Solve for x
    x = 188,538,161,674.01/485,330.30
  6. Step 6: Final answer
    x = 388,473.92

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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.