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Finding the Fourth Proportional to 572,272.40, 858,408.60 and 172,974.80

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Solution

The fourth proportional to 572,272.40, 858,408.60 and 172,974.80 is: 259,462.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,272.40 : 858,408.60 = 172,974.80 : x
  2. Step 2: Convert to fraction form
    572,272.40/858,408.60 = 172,974.80/x
  3. Step 3: Cross multiply
    572,272.40x = 858,408.60 × 172,974.80
  4. Step 4: Simplify right side
    572,272.40x = 148,483,055,903.28
  5. Step 5: Solve for x
    x = 148,483,055,903.28/572,272.40
  6. Step 6: Final answer
    x = 259,462.20

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Double scale
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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.