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Finding the Fourth Proportional to 298,498.80, 447,748.20 and 88,136.40

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Solution

The fourth proportional to 298,498.80, 447,748.20 and 88,136.40 is: 132,204.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,498.80 : 447,748.20 = 88,136.40 : x
  2. Step 2: Convert to fraction form
    298,498.80/447,748.20 = 88,136.40/x
  3. Step 3: Cross multiply
    298,498.80x = 447,748.20 × 88,136.40
  4. Step 4: Simplify right side
    298,498.80x = 39,462,914,454.48
  5. Step 5: Solve for x
    x = 39,462,914,454.48/298,498.80
  6. Step 6: Final answer
    x = 132,204.60

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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.