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Finding the Fourth Proportional to 287,242.56, 396,392.40 and 159,910.56

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Solution

The fourth proportional to 287,242.56, 396,392.40 and 159,910.56 is: 220,675.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,242.56 : 396,392.40 = 159,910.56 : x
  2. Step 2: Convert to fraction form
    287,242.56/396,392.40 = 159,910.56/x
  3. Step 3: Cross multiply
    287,242.56x = 396,392.40 × 159,910.56
  4. Step 4: Simplify right side
    287,242.56x = 63,387,330,663.74
  5. Step 5: Solve for x
    x = 63,387,330,663.74/287,242.56
  6. Step 6: Final answer
    x = 220,675.27

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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.