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Finding the Fourth Proportional to 298,552.80, 447,440.40 and 138,610.20

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Solution

The fourth proportional to 298,552.80, 447,440.40 and 138,610.20 is: 207,734.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,552.80 : 447,440.40 = 138,610.20 : x
  2. Step 2: Convert to fraction form
    298,552.80/447,440.40 = 138,610.20/x
  3. Step 3: Cross multiply
    298,552.80x = 447,440.40 × 138,610.20
  4. Step 4: Simplify right side
    298,552.80x = 62,019,803,332.08
  5. Step 5: Solve for x
    x = 62,019,803,332.08/298,552.80
  6. Step 6: Final answer
    x = 207,734.79

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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.