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Finding the Fourth Proportional to 221,595.44, 305,433.48 and 156,981.74

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Solution

The fourth proportional to 221,595.44, 305,433.48 and 156,981.74 is: 216,373.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,595.44 : 305,433.48 = 156,981.74 : x
  2. Step 2: Convert to fraction form
    221,595.44/305,433.48 = 156,981.74/x
  3. Step 3: Cross multiply
    221,595.44x = 305,433.48 × 156,981.74
  4. Step 4: Simplify right side
    221,595.44x = 47,947,479,144.66
  5. Step 5: Solve for x
    x = 47,947,479,144.66/221,595.44
  6. Step 6: Final answer
    x = 216,373.94

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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.