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Finding the Fourth Proportional to 358,987.80, 537,315.30 and 279,672.60

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Solution

The fourth proportional to 358,987.80, 537,315.30 and 279,672.60 is: 418,600.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,987.80 : 537,315.30 = 279,672.60 : x
  2. Step 2: Convert to fraction form
    358,987.80/537,315.30 = 279,672.60/x
  3. Step 3: Cross multiply
    358,987.80x = 537,315.30 × 279,672.60
  4. Step 4: Simplify right side
    358,987.80x = 150,272,366,970.78
  5. Step 5: Solve for x
    x = 150,272,366,970.78/358,987.80
  6. Step 6: Final answer
    x = 418,600.21

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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.