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Finding the Fourth Proportional to 286,685.28, 395,639.19 and 159,363

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Solution

The fourth proportional to 286,685.28, 395,639.19 and 159,363 is: 219,928.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,685.28 : 395,639.19 = 159,363 : x
  2. Step 2: Convert to fraction form
    286,685.28/395,639.19 = 159,363/x
  3. Step 3: Cross multiply
    286,685.28x = 395,639.19 × 159,363
  4. Step 4: Simplify right side
    286,685.28x = 63,050,248,235.97
  5. Step 5: Solve for x
    x = 63,050,248,235.97/286,685.28
  6. Step 6: Final answer
    x = 219,928.45

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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.