Home / 282,744.52-390,079.24-209,331.80

Finding the Fourth Proportional to 282,744.52, 390,079.24 and 209,331.80

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Solution

The fourth proportional to 282,744.52, 390,079.24 and 209,331.80 is: 288,797.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,744.52 : 390,079.24 = 209,331.80 : x
  2. Step 2: Convert to fraction form
    282,744.52/390,079.24 = 209,331.80/x
  3. Step 3: Cross multiply
    282,744.52x = 390,079.24 × 209,331.80
  4. Step 4: Simplify right side
    282,744.52x = 81,655,989,451.83
  5. Step 5: Solve for x
    x = 81,655,989,451.83/282,744.52
  6. Step 6: Final answer
    x = 288,797.78

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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.