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Finding the Fourth Proportional to 287,148.02, 396,257.54 and 159,820.88

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Solution

The fourth proportional to 287,148.02, 396,257.54 and 159,820.88 is: 220,549.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,148.02 : 396,257.54 = 159,820.88 : x
  2. Step 2: Convert to fraction form
    287,148.02/396,257.54 = 159,820.88/x
  3. Step 3: Cross multiply
    287,148.02x = 396,257.54 × 159,820.88
  4. Step 4: Simplify right side
    287,148.02x = 63,330,228,749.44
  5. Step 5: Solve for x
    x = 63,330,228,749.44/287,148.02
  6. Step 6: Final answer
    x = 220,549.07

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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.