Home / 282,781.26-390,238.14-155,456.87

Finding the Fourth Proportional to 282,781.26, 390,238.14 and 155,456.87

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Solution

The fourth proportional to 282,781.26, 390,238.14 and 155,456.87 is: 214,530.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,781.26 : 390,238.14 = 155,456.87 : x
  2. Step 2: Convert to fraction form
    282,781.26/390,238.14 = 155,456.87/x
  3. Step 3: Cross multiply
    282,781.26x = 390,238.14 × 155,456.87
  4. Step 4: Simplify right side
    282,781.26x = 60,665,197,847.83
  5. Step 5: Solve for x
    x = 60,665,197,847.83/282,781.26
  6. Step 6: Final answer
    x = 214,530.47

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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.