Home / 218,932.38-302,127.09-123,438.84

Finding the Fourth Proportional to 218,932.38, 302,127.09 and 123,438.84

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Solution

The fourth proportional to 218,932.38, 302,127.09 and 123,438.84 is: 170,345.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,932.38 : 302,127.09 = 123,438.84 : x
  2. Step 2: Convert to fraction form
    218,932.38/302,127.09 = 123,438.84/x
  3. Step 3: Cross multiply
    218,932.38x = 302,127.09 × 123,438.84
  4. Step 4: Simplify right side
    218,932.38x = 37,294,217,522.18
  5. Step 5: Solve for x
    x = 37,294,217,522.18/218,932.38
  6. Step 6: Final answer
    x = 170,345.83

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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.