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Finding the Fourth Proportional to 401,487.40, 602,231.10 and 243,764.20

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Solution

The fourth proportional to 401,487.40, 602,231.10 and 243,764.20 is: 365,646.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,487.40 : 602,231.10 = 243,764.20 : x
  2. Step 2: Convert to fraction form
    401,487.40/602,231.10 = 243,764.20/x
  3. Step 3: Cross multiply
    401,487.40x = 602,231.10 × 243,764.20
  4. Step 4: Simplify right side
    401,487.40x = 146,802,382,306.62
  5. Step 5: Solve for x
    x = 146,802,382,306.62/401,487.40
  6. Step 6: Final answer
    x = 365,646.30

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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.