Home / 439,205.60-658,808.40-261,621.20

Finding the Fourth Proportional to 439,205.60, 658,808.40 and 261,621.20

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Solution

The fourth proportional to 439,205.60, 658,808.40 and 261,621.20 is: 392,431.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,205.60 : 658,808.40 = 261,621.20 : x
  2. Step 2: Convert to fraction form
    439,205.60/658,808.40 = 261,621.20/x
  3. Step 3: Cross multiply
    439,205.60x = 658,808.40 × 261,621.20
  4. Step 4: Simplify right side
    439,205.60x = 172,358,244,178.08
  5. Step 5: Solve for x
    x = 172,358,244,178.08/439,205.60
  6. Step 6: Final answer
    x = 392,431.80

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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.