Home / 282,789.30-390,239.28-155,463.96

Finding the Fourth Proportional to 282,789.30, 390,239.28 and 155,463.96

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Solution

The fourth proportional to 282,789.30, 390,239.28 and 155,463.96 is: 214,534.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,789.30 : 390,239.28 = 155,463.96 : x
  2. Step 2: Convert to fraction form
    282,789.30/390,239.28 = 155,463.96/x
  3. Step 3: Cross multiply
    282,789.30x = 390,239.28 × 155,463.96
  4. Step 4: Simplify right side
    282,789.30x = 60,668,143,816.35
  5. Step 5: Solve for x
    x = 60,668,143,816.35/282,789.30
  6. Step 6: Final answer
    x = 214,534.79

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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.