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Finding the Fourth Proportional to 458,202.96, 687,079.58 and 188,282.20

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Solution

The fourth proportional to 458,202.96, 687,079.58 and 188,282.20 is: 282,330.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,202.96 : 687,079.58 = 188,282.20 : x
  2. Step 2: Convert to fraction form
    458,202.96/687,079.58 = 188,282.20/x
  3. Step 3: Cross multiply
    458,202.96x = 687,079.58 × 188,282.20
  4. Step 4: Simplify right side
    458,202.96x = 129,364,854,897.48
  5. Step 5: Solve for x
    x = 129,364,854,897.48/458,202.96
  6. Step 6: Final answer
    x = 282,330.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.