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Finding the Fourth Proportional to 309,254.61, 462,948.12 and 279,686.37

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Solution

The fourth proportional to 309,254.61, 462,948.12 and 279,686.37 is: 418,685.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,254.61 : 462,948.12 = 279,686.37 : x
  2. Step 2: Convert to fraction form
    309,254.61/462,948.12 = 279,686.37/x
  3. Step 3: Cross multiply
    309,254.61x = 462,948.12 × 279,686.37
  4. Step 4: Simplify right side
    309,254.61x = 129,480,279,181.12
  5. Step 5: Solve for x
    x = 129,480,279,181.12/309,254.61
  6. Step 6: Final answer
    x = 418,685.04

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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.