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Finding the Fourth Proportional to 287,424.93, 396,658.65 and 160,100.49

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Solution

The fourth proportional to 287,424.93, 396,658.65 and 160,100.49 is: 220,945.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,424.93 : 396,658.65 = 160,100.49 : x
  2. Step 2: Convert to fraction form
    287,424.93/396,658.65 = 160,100.49/x
  3. Step 3: Cross multiply
    287,424.93x = 396,658.65 × 160,100.49
  4. Step 4: Simplify right side
    287,424.93x = 63,505,244,227.74
  5. Step 5: Solve for x
    x = 63,505,244,227.74/287,424.93
  6. Step 6: Final answer
    x = 220,945.50

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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.