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Finding the Fourth Proportional to 542,968.40, 815,230.20 and 306,772.40

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Solution

The fourth proportional to 542,968.40, 815,230.20 and 306,772.40 is: 460,597.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,968.40 : 815,230.20 = 306,772.40 : x
  2. Step 2: Convert to fraction form
    542,968.40/815,230.20 = 306,772.40/x
  3. Step 3: Cross multiply
    542,968.40x = 815,230.20 × 306,772.40
  4. Step 4: Simplify right side
    542,968.40x = 250,090,125,006.48
  5. Step 5: Solve for x
    x = 250,090,125,006.48/542,968.40
  6. Step 6: Final answer
    x = 460,597.94

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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.