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Finding the Fourth Proportional to 439,801.20, 659,701.80 and 298,083.60

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Solution

The fourth proportional to 439,801.20, 659,701.80 and 298,083.60 is: 447,125.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,801.20 : 659,701.80 = 298,083.60 : x
  2. Step 2: Convert to fraction form
    439,801.20/659,701.80 = 298,083.60/x
  3. Step 3: Cross multiply
    439,801.20x = 659,701.80 × 298,083.60
  4. Step 4: Simplify right side
    439,801.20x = 196,646,287,470.48
  5. Step 5: Solve for x
    x = 196,646,287,470.48/439,801.20
  6. Step 6: Final answer
    x = 447,125.40

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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.