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Finding the Fourth Proportional to 275,998.16, 380,875.56 and 156,766.16

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Solution

The fourth proportional to 275,998.16, 380,875.56 and 156,766.16 is: 216,336.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,998.16 : 380,875.56 = 156,766.16 : x
  2. Step 2: Convert to fraction form
    275,998.16/380,875.56 = 156,766.16/x
  3. Step 3: Cross multiply
    275,998.16x = 380,875.56 × 156,766.16
  4. Step 4: Simplify right side
    275,998.16x = 59,708,398,979.05
  5. Step 5: Solve for x
    x = 59,708,398,979.05/275,998.16
  6. Step 6: Final answer
    x = 216,336.22

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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.