Home / 438,056.20-656,825.10-228,104.20

Finding the Fourth Proportional to 438,056.20, 656,825.10 and 228,104.20

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Solution

The fourth proportional to 438,056.20, 656,825.10 and 228,104.20 is: 342,021.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,056.20 : 656,825.10 = 228,104.20 : x
  2. Step 2: Convert to fraction form
    438,056.20/656,825.10 = 228,104.20/x
  3. Step 3: Cross multiply
    438,056.20x = 656,825.10 × 228,104.20
  4. Step 4: Simplify right side
    438,056.20x = 149,824,563,975.42
  5. Step 5: Solve for x
    x = 149,824,563,975.42/438,056.20
  6. Step 6: Final answer
    x = 342,021.33

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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.