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Finding the Fourth Proportional to 543,462.40, 815,193.60 and 343,133.20

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Solution

The fourth proportional to 543,462.40, 815,193.60 and 343,133.20 is: 514,699.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,462.40 : 815,193.60 = 343,133.20 : x
  2. Step 2: Convert to fraction form
    543,462.40/815,193.60 = 343,133.20/x
  3. Step 3: Cross multiply
    543,462.40x = 815,193.60 × 343,133.20
  4. Step 4: Simplify right side
    543,462.40x = 279,719,988,587.52
  5. Step 5: Solve for x
    x = 279,719,988,587.52/543,462.40
  6. Step 6: Final answer
    x = 514,699.80

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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.