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Finding the Fourth Proportional to 230,317.40, 317,833.80 and 129,715.40

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Solution

The fourth proportional to 230,317.40, 317,833.80 and 129,715.40 is: 179,004.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,317.40 : 317,833.80 = 129,715.40 : x
  2. Step 2: Convert to fraction form
    230,317.40/317,833.80 = 129,715.40/x
  3. Step 3: Cross multiply
    230,317.40x = 317,833.80 × 129,715.40
  4. Step 4: Simplify right side
    230,317.40x = 41,227,938,500.52
  5. Step 5: Solve for x
    x = 41,227,938,500.52/230,317.40
  6. Step 6: Final answer
    x = 179,004.88

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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.