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Finding the Fourth Proportional to 361,887.20, 542,830.80 and 303,826.40

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Solution

The fourth proportional to 361,887.20, 542,830.80 and 303,826.40 is: 455,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,887.20 : 542,830.80 = 303,826.40 : x
  2. Step 2: Convert to fraction form
    361,887.20/542,830.80 = 303,826.40/x
  3. Step 3: Cross multiply
    361,887.20x = 542,830.80 × 303,826.40
  4. Step 4: Simplify right side
    361,887.20x = 164,926,327,773.12
  5. Step 5: Solve for x
    x = 164,926,327,773.12/361,887.20
  6. Step 6: Final answer
    x = 455,739.60

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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.