Home / 228,401.17-315,189.10-126,420.68

Finding the Fourth Proportional to 228,401.17, 315,189.10 and 126,420.68

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Solution

The fourth proportional to 228,401.17, 315,189.10 and 126,420.68 is: 174,458.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,401.17 : 315,189.10 = 126,420.68 : x
  2. Step 2: Convert to fraction form
    228,401.17/315,189.10 = 126,420.68/x
  3. Step 3: Cross multiply
    228,401.17x = 315,189.10 × 126,420.68
  4. Step 4: Simplify right side
    228,401.17x = 39,846,420,350.59
  5. Step 5: Solve for x
    x = 39,846,420,350.59/228,401.17
  6. Step 6: Final answer
    x = 174,458.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.