Home / 218,966.85-302,122.56-123,455.10

Finding the Fourth Proportional to 218,966.85, 302,122.56 and 123,455.10

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Solution

The fourth proportional to 218,966.85, 302,122.56 and 123,455.10 is: 170,338.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,966.85 : 302,122.56 = 123,455.10 : x
  2. Step 2: Convert to fraction form
    218,966.85/302,122.56 = 123,455.10/x
  3. Step 3: Cross multiply
    218,966.85x = 302,122.56 × 123,455.10
  4. Step 4: Simplify right side
    218,966.85x = 37,298,570,857.06
  5. Step 5: Solve for x
    x = 37,298,570,857.06/218,966.85
  6. Step 6: Final answer
    x = 170,338.89

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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.