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Finding the Fourth Proportional to 261,528.80, 360,850.86 and 154,108.85

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Solution

The fourth proportional to 261,528.80, 360,850.86 and 154,108.85 is: 212,635.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,528.80 : 360,850.86 = 154,108.85 : x
  2. Step 2: Convert to fraction form
    261,528.80/360,850.86 = 154,108.85/x
  3. Step 3: Cross multiply
    261,528.80x = 360,850.86 × 154,108.85
  4. Step 4: Simplify right side
    261,528.80x = 55,610,309,251.86
  5. Step 5: Solve for x
    x = 55,610,309,251.86/261,528.80
  6. Step 6: Final answer
    x = 212,635.51

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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.