Home / 261,030.20-391,545.30-228,889.40

Finding the Fourth Proportional to 261,030.20, 391,545.30 and 228,889.40

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Solution

The fourth proportional to 261,030.20, 391,545.30 and 228,889.40 is: 343,334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,030.20 : 391,545.30 = 228,889.40 : x
  2. Step 2: Convert to fraction form
    261,030.20/391,545.30 = 228,889.40/x
  3. Step 3: Cross multiply
    261,030.20x = 391,545.30 × 228,889.40
  4. Step 4: Simplify right side
    261,030.20x = 89,620,568,789.82
  5. Step 5: Solve for x
    x = 89,620,568,789.82/261,030.20
  6. Step 6: Final answer
    x = 343,334.10

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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.