Home / 438,375.20-657,584.40-228,423.20

Finding the Fourth Proportional to 438,375.20, 657,584.40 and 228,423.20

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Solution

The fourth proportional to 438,375.20, 657,584.40 and 228,423.20 is: 342,646.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,375.20 : 657,584.40 = 228,423.20 : x
  2. Step 2: Convert to fraction form
    438,375.20/657,584.40 = 228,423.20/x
  3. Step 3: Cross multiply
    438,375.20x = 657,584.40 × 228,423.20
  4. Step 4: Simplify right side
    438,375.20x = 150,207,532,918.08
  5. Step 5: Solve for x
    x = 150,207,532,918.08/438,375.20
  6. Step 6: Final answer
    x = 342,646.06

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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.