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Finding the Fourth Proportional to 287,160.76, 396,281.88 and 159,833.62

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Solution

The fourth proportional to 287,160.76, 396,281.88 and 159,833.62 is: 220,570.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,160.76 : 396,281.88 = 159,833.62 : x
  2. Step 2: Convert to fraction form
    287,160.76/396,281.88 = 159,833.62/x
  3. Step 3: Cross multiply
    287,160.76x = 396,281.88 × 159,833.62
  4. Step 4: Simplify right side
    287,160.76x = 63,339,167,420.81
  5. Step 5: Solve for x
    x = 63,339,167,420.81/287,160.76
  6. Step 6: Final answer
    x = 220,570.41

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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.