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Finding the Fourth Proportional to 361,903.20, 542,854.80 and 272,090.40

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Solution

The fourth proportional to 361,903.20, 542,854.80 and 272,090.40 is: 408,135.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,903.20 : 542,854.80 = 272,090.40 : x
  2. Step 2: Convert to fraction form
    361,903.20/542,854.80 = 272,090.40/x
  3. Step 3: Cross multiply
    361,903.20x = 542,854.80 × 272,090.40
  4. Step 4: Simplify right side
    361,903.20x = 147,705,579,673.92
  5. Step 5: Solve for x
    x = 147,705,579,673.92/361,903.20
  6. Step 6: Final answer
    x = 408,135.60

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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.