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Finding the Fourth Proportional to 270,493.80, 405,740.70 and 248,332.20

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Solution

The fourth proportional to 270,493.80, 405,740.70 and 248,332.20 is: 372,498.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,493.80 : 405,740.70 = 248,332.20 : x
  2. Step 2: Convert to fraction form
    270,493.80/405,740.70 = 248,332.20/x
  3. Step 3: Cross multiply
    270,493.80x = 405,740.70 × 248,332.20
  4. Step 4: Simplify right side
    270,493.80x = 100,758,480,660.54
  5. Step 5: Solve for x
    x = 100,758,480,660.54/270,493.80
  6. Step 6: Final answer
    x = 372,498.30

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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.