Home / 485,248.05-669,642.33-281,417.22

Finding the Fourth Proportional to 485,248.05, 669,642.33 and 281,417.22

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Solution

The fourth proportional to 485,248.05, 669,642.33 and 281,417.22 is: 388,355.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,248.05 : 669,642.33 = 281,417.22 : x
  2. Step 2: Convert to fraction form
    485,248.05/669,642.33 = 281,417.22/x
  3. Step 3: Cross multiply
    485,248.05x = 669,642.33 × 281,417.22
  4. Step 4: Simplify right side
    485,248.05x = 188,448,882,902.92
  5. Step 5: Solve for x
    x = 188,448,882,902.92/485,248.05
  6. Step 6: Final answer
    x = 388,355.78

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1.5x scale

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.