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Finding the Fourth Proportional to 261,785.94, 361,254.96 and 159,981.76

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Solution

The fourth proportional to 261,785.94, 361,254.96 and 159,981.76 is: 220,768.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,785.94 : 361,254.96 = 159,981.76 : x
  2. Step 2: Convert to fraction form
    261,785.94/361,254.96 = 159,981.76/x
  3. Step 3: Cross multiply
    261,785.94x = 361,254.96 × 159,981.76
  4. Step 4: Simplify right side
    261,785.94x = 57,794,204,309.53
  5. Step 5: Solve for x
    x = 57,794,204,309.53/261,785.94
  6. Step 6: Final answer
    x = 220,768.94

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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.