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Finding the Fourth Proportional to 394,422.71, 544,193.12 and 265,542.80

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Solution

The fourth proportional to 394,422.71, 544,193.12 and 265,542.80 is: 366,374.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,422.71 : 544,193.12 = 265,542.80 : x
  2. Step 2: Convert to fraction form
    394,422.71/544,193.12 = 265,542.80/x
  3. Step 3: Cross multiply
    394,422.71x = 544,193.12 × 265,542.80
  4. Step 4: Simplify right side
    394,422.71x = 144,506,563,497.82
  5. Step 5: Solve for x
    x = 144,506,563,497.82/394,422.71
  6. Step 6: Final answer
    x = 366,374.86

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1.5x scale

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.