Home / 218,888.10-302,065.56-123,394.80

Finding the Fourth Proportional to 218,888.10, 302,065.56 and 123,394.80

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Solution

The fourth proportional to 218,888.10, 302,065.56 and 123,394.80 is: 170,284.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,888.10 : 302,065.56 = 123,394.80 : x
  2. Step 2: Convert to fraction form
    218,888.10/302,065.56 = 123,394.80/x
  3. Step 3: Cross multiply
    218,888.10x = 302,065.56 × 123,394.80
  4. Step 4: Simplify right side
    218,888.10x = 37,273,319,363.09
  5. Step 5: Solve for x
    x = 37,273,319,363.09/218,888.10
  6. Step 6: Final answer
    x = 170,284.81

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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.