Home / 282,781.08-390,245.34-155,459.88

Finding the Fourth Proportional to 282,781.08, 390,245.34 and 155,459.88

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Solution

The fourth proportional to 282,781.08, 390,245.34 and 155,459.88 is: 214,538.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,781.08 : 390,245.34 = 155,459.88 : x
  2. Step 2: Convert to fraction form
    282,781.08/390,245.34 = 155,459.88/x
  3. Step 3: Cross multiply
    282,781.08x = 390,245.34 × 155,459.88
  4. Step 4: Simplify right side
    282,781.08x = 60,667,493,726.96
  5. Step 5: Solve for x
    x = 60,667,493,726.96/282,781.08
  6. Step 6: Final answer
    x = 214,538.73

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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.