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Finding the Fourth Proportional to 426,422, 588,514.20 and 247,574

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Solution

The fourth proportional to 426,422, 588,514.20 and 247,574 is: 341,682.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,422 : 588,514.20 = 247,574 : x
  2. Step 2: Convert to fraction form
    426,422/588,514.20 = 247,574/x
  3. Step 3: Cross multiply
    426,422x = 588,514.20 × 247,574
  4. Step 4: Simplify right side
    426,422x = 145,700,814,550.80
  5. Step 5: Solve for x
    x = 145,700,814,550.80/426,422
  6. Step 6: Final answer
    x = 341,682.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.