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Finding the Fourth Proportional to 296,987.40, 445,481.10 and 72,346.05

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Solution

The fourth proportional to 296,987.40, 445,481.10 and 72,346.05 is: 108,519.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,987.40 : 445,481.10 = 72,346.05 : x
  2. Step 2: Convert to fraction form
    296,987.40/445,481.10 = 72,346.05/x
  3. Step 3: Cross multiply
    296,987.40x = 445,481.10 × 72,346.05
  4. Step 4: Simplify right side
    296,987.40x = 32,228,797,934.66
  5. Step 5: Solve for x
    x = 32,228,797,934.66/296,987.40
  6. Step 6: Final answer
    x = 108,519.08

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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.