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Finding the Fourth Proportional to 572,286.40, 858,429.60 and 172,988.80

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Solution

The fourth proportional to 572,286.40, 858,429.60 and 172,988.80 is: 259,483.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,286.40 : 858,429.60 = 172,988.80 : x
  2. Step 2: Convert to fraction form
    572,286.40/858,429.60 = 172,988.80/x
  3. Step 3: Cross multiply
    572,286.40x = 858,429.60 × 172,988.80
  4. Step 4: Simplify right side
    572,286.40x = 148,498,706,388.48
  5. Step 5: Solve for x
    x = 148,498,706,388.48/572,286.40
  6. Step 6: Final answer
    x = 259,483.20

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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.