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Finding the Fourth Proportional to 394,869.28, 591,684 and 268,569.76

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Solution

The fourth proportional to 394,869.28, 591,684 and 268,569.76 is: 402,433.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,869.28 : 591,684 = 268,569.76 : x
  2. Step 2: Convert to fraction form
    394,869.28/591,684 = 268,569.76/x
  3. Step 3: Cross multiply
    394,869.28x = 591,684 × 268,569.76
  4. Step 4: Simplify right side
    394,869.28x = 158,908,429,875.84
  5. Step 5: Solve for x
    x = 158,908,429,875.84/394,869.28
  6. Step 6: Final answer
    x = 402,433.00

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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.