Home / 218,678.36-328,062.02-92,318.64

Finding the Fourth Proportional to 218,678.36, 328,062.02 and 92,318.64

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Solution

The fourth proportional to 218,678.36, 328,062.02 and 92,318.64 is: 138,496.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,678.36 : 328,062.02 = 92,318.64 : x
  2. Step 2: Convert to fraction form
    218,678.36/328,062.02 = 92,318.64/x
  3. Step 3: Cross multiply
    218,678.36x = 328,062.02 × 92,318.64
  4. Step 4: Simplify right side
    218,678.36x = 30,286,239,060.46
  5. Step 5: Solve for x
    x = 30,286,239,060.46/218,678.36
  6. Step 6: Final answer
    x = 138,496.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.