Home / 287,135.96-396,243.66-159,811.60

Finding the Fourth Proportional to 287,135.96, 396,243.66 and 159,811.60

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Solution

The fourth proportional to 287,135.96, 396,243.66 and 159,811.60 is: 220,537.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,135.96 : 396,243.66 = 159,811.60 : x
  2. Step 2: Convert to fraction form
    287,135.96/396,243.66 = 159,811.60/x
  3. Step 3: Cross multiply
    287,135.96x = 396,243.66 × 159,811.60
  4. Step 4: Simplify right side
    287,135.96x = 63,324,333,294.46
  5. Step 5: Solve for x
    x = 63,324,333,294.46/287,135.96
  6. Step 6: Final answer
    x = 220,537.80

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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.