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Finding the Fourth Proportional to 452,854.80, 679,282.20 and 186,478.20

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Solution

The fourth proportional to 452,854.80, 679,282.20 and 186,478.20 is: 279,717.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,854.80 : 679,282.20 = 186,478.20 : x
  2. Step 2: Convert to fraction form
    452,854.80/679,282.20 = 186,478.20/x
  3. Step 3: Cross multiply
    452,854.80x = 679,282.20 × 186,478.20
  4. Step 4: Simplify right side
    452,854.80x = 126,671,321,948.04
  5. Step 5: Solve for x
    x = 126,671,321,948.04/452,854.80
  6. Step 6: Final answer
    x = 279,717.30

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Similar ratio
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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.