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Finding the Fourth Proportional to 404,330.80, 605,621.40 and 262,613.20

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Solution

The fourth proportional to 404,330.80, 605,621.40 and 262,613.20 is: 393,351.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,330.80 : 605,621.40 = 262,613.20 : x
  2. Step 2: Convert to fraction form
    404,330.80/605,621.40 = 262,613.20/x
  3. Step 3: Cross multiply
    404,330.80x = 605,621.40 × 262,613.20
  4. Step 4: Simplify right side
    404,330.80x = 159,044,173,842.48
  5. Step 5: Solve for x
    x = 159,044,173,842.48/404,330.80
  6. Step 6: Final answer
    x = 393,351.62

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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.