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Finding the Fourth Proportional to 275,965.50, 380,832.75 and 156,733.50

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Solution

The fourth proportional to 275,965.50, 380,832.75 and 156,733.50 is: 216,292.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,965.50 : 380,832.75 = 156,733.50 : x
  2. Step 2: Convert to fraction form
    275,965.50/380,832.75 = 156,733.50/x
  3. Step 3: Cross multiply
    275,965.50x = 380,832.75 × 156,733.50
  4. Step 4: Simplify right side
    275,965.50x = 59,689,249,822.13
  5. Step 5: Solve for x
    x = 59,689,249,822.13/275,965.50
  6. Step 6: Final answer
    x = 216,292.43

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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.