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Finding the Fourth Proportional to 230,128.20, 317,580.48 and 129,526.20

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Solution

The fourth proportional to 230,128.20, 317,580.48 and 129,526.20 is: 178,748.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,128.20 : 317,580.48 = 129,526.20 : x
  2. Step 2: Convert to fraction form
    230,128.20/317,580.48 = 129,526.20/x
  3. Step 3: Cross multiply
    230,128.20x = 317,580.48 × 129,526.20
  4. Step 4: Simplify right side
    230,128.20x = 41,134,992,768.58
  5. Step 5: Solve for x
    x = 41,134,992,768.58/230,128.20
  6. Step 6: Final answer
    x = 178,748.16

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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.