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Finding the Fourth Proportional to 287,253.84, 396,403.56 and 159,926.88

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Solution

The fourth proportional to 287,253.84, 396,403.56 and 159,926.88 is: 220,695.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,253.84 : 396,403.56 = 159,926.88 : x
  2. Step 2: Convert to fraction form
    287,253.84/396,403.56 = 159,926.88/x
  3. Step 3: Cross multiply
    287,253.84x = 396,403.56 × 159,926.88
  4. Step 4: Simplify right side
    287,253.84x = 63,395,584,571.69
  5. Step 5: Solve for x
    x = 63,395,584,571.69/287,253.84
  6. Step 6: Final answer
    x = 220,695.34

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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.