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Finding the Fourth Proportional to 401,489.40, 602,234.10 and 243,766.20

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Solution

The fourth proportional to 401,489.40, 602,234.10 and 243,766.20 is: 365,649.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,489.40 : 602,234.10 = 243,766.20 : x
  2. Step 2: Convert to fraction form
    401,489.40/602,234.10 = 243,766.20/x
  3. Step 3: Cross multiply
    401,489.40x = 602,234.10 × 243,766.20
  4. Step 4: Simplify right side
    401,489.40x = 146,804,318,067.42
  5. Step 5: Solve for x
    x = 146,804,318,067.42/401,489.40
  6. Step 6: Final answer
    x = 365,649.30

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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.