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Finding the Fourth Proportional to 230,554.69, 345,862.28 and 90,295.09

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Solution

The fourth proportional to 230,554.69, 345,862.28 and 90,295.09 is: 135,454.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,554.69 : 345,862.28 = 90,295.09 : x
  2. Step 2: Convert to fraction form
    230,554.69/345,862.28 = 90,295.09/x
  3. Step 3: Cross multiply
    230,554.69x = 345,862.28 × 90,295.09
  4. Step 4: Simplify right side
    230,554.69x = 31,229,665,700.21
  5. Step 5: Solve for x
    x = 31,229,665,700.21/230,554.69
  6. Step 6: Final answer
    x = 135,454.48

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1.5x scale

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.