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Finding the Fourth Proportional to 561,909.30, 842,723.62 and 220,422.12

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Solution

The fourth proportional to 561,909.30, 842,723.62 and 220,422.12 is: 330,578.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,909.30 : 842,723.62 = 220,422.12 : x
  2. Step 2: Convert to fraction form
    561,909.30/842,723.62 = 220,422.12/x
  3. Step 3: Cross multiply
    561,909.30x = 842,723.62 × 220,422.12
  4. Step 4: Simplify right side
    561,909.30x = 185,754,926,894.47
  5. Step 5: Solve for x
    x = 185,754,926,894.47/561,909.30
  6. Step 6: Final answer
    x = 330,578.13

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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.