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Finding the Fourth Proportional to 230,554.68, 318,164.85 and 128,580.27

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Solution

The fourth proportional to 230,554.68, 318,164.85 and 128,580.27 is: 177,440.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,554.68 : 318,164.85 = 128,580.27 : x
  2. Step 2: Convert to fraction form
    230,554.68/318,164.85 = 128,580.27/x
  3. Step 3: Cross multiply
    230,554.68x = 318,164.85 × 128,580.27
  4. Step 4: Simplify right side
    230,554.68x = 40,909,722,317.51
  5. Step 5: Solve for x
    x = 40,909,722,317.51/230,554.68
  6. Step 6: Final answer
    x = 177,440.43

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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.