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Finding the Fourth Proportional to 218,056.42, 300,926.39 and 122,562.82

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Solution

The fourth proportional to 218,056.42, 300,926.39 and 122,562.82 is: 169,141.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,056.42 : 300,926.39 = 122,562.82 : x
  2. Step 2: Convert to fraction form
    218,056.42/300,926.39 = 122,562.82/x
  3. Step 3: Cross multiply
    218,056.42x = 300,926.39 × 122,562.82
  4. Step 4: Simplify right side
    218,056.42x = 36,882,386,970.82
  5. Step 5: Solve for x
    x = 36,882,386,970.82/218,056.42
  6. Step 6: Final answer
    x = 169,141.49

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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.