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Finding the Fourth Proportional to 361,621.52, 542,233.56 and 287,218.16

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Solution

The fourth proportional to 361,621.52, 542,233.56 and 287,218.16 is: 430,669.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,621.52 : 542,233.56 = 287,218.16 : x
  2. Step 2: Convert to fraction form
    361,621.52/542,233.56 = 287,218.16/x
  3. Step 3: Cross multiply
    361,621.52x = 542,233.56 × 287,218.16
  4. Step 4: Simplify right side
    361,621.52x = 155,739,325,393.45
  5. Step 5: Solve for x
    x = 155,739,325,393.45/361,621.52
  6. Step 6: Final answer
    x = 430,669.41

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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.