Home / 282,778.08-390,241.20-155,456.88

Finding the Fourth Proportional to 282,778.08, 390,241.20 and 155,456.88

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Solution

The fourth proportional to 282,778.08, 390,241.20 and 155,456.88 is: 214,534.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,778.08 : 390,241.20 = 155,456.88 : x
  2. Step 2: Convert to fraction form
    282,778.08/390,241.20 = 155,456.88/x
  3. Step 3: Cross multiply
    282,778.08x = 390,241.20 × 155,456.88
  4. Step 4: Simplify right side
    282,778.08x = 60,665,679,399.46
  5. Step 5: Solve for x
    x = 60,665,679,399.46/282,778.08
  6. Step 6: Final answer
    x = 214,534.59

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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.