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Finding the Fourth Proportional to 394,422.32, 544,302.53 and 213,134.18

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Solution

The fourth proportional to 394,422.32, 544,302.53 and 213,134.18 is: 294,125.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,422.32 : 544,302.53 = 213,134.18 : x
  2. Step 2: Convert to fraction form
    394,422.32/544,302.53 = 213,134.18/x
  3. Step 3: Cross multiply
    394,422.32x = 544,302.53 × 213,134.18
  4. Step 4: Simplify right side
    394,422.32x = 116,009,473,403.48
  5. Step 5: Solve for x
    x = 116,009,473,403.48/394,422.32
  6. Step 6: Final answer
    x = 294,125.02

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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.