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Finding the Fourth Proportional to 222,686.70, 306,895.51 and 158,158.76

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Solution

The fourth proportional to 222,686.70, 306,895.51 and 158,158.76 is: 217,966.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,686.70 : 306,895.51 = 158,158.76 : x
  2. Step 2: Convert to fraction form
    222,686.70/306,895.51 = 158,158.76/x
  3. Step 3: Cross multiply
    222,686.70x = 306,895.51 × 158,158.76
  4. Step 4: Simplify right side
    222,686.70x = 48,538,211,974.39
  5. Step 5: Solve for x
    x = 48,538,211,974.39/222,686.70
  6. Step 6: Final answer
    x = 217,966.38

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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.