Home / 485,263.13-669,665.75-281,434.88

Finding the Fourth Proportional to 485,263.13, 669,665.75 and 281,434.88

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Solution

The fourth proportional to 485,263.13, 669,665.75 and 281,434.88 is: 388,381.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,263.13 : 669,665.75 = 281,434.88 : x
  2. Step 2: Convert to fraction form
    485,263.13/669,665.75 = 281,434.88/x
  3. Step 3: Cross multiply
    485,263.13x = 669,665.75 × 281,434.88
  4. Step 4: Simplify right side
    485,263.13x = 188,467,295,235.86
  5. Step 5: Solve for x
    x = 188,467,295,235.86/485,263.13
  6. Step 6: Final answer
    x = 388,381.65

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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.