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Finding the Fourth Proportional to 229,960.80, 317,342.52 and 129,358.80

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Solution

The fourth proportional to 229,960.80, 317,342.52 and 129,358.80 is: 178,513.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,960.80 : 317,342.52 = 129,358.80 : x
  2. Step 2: Convert to fraction form
    229,960.80/317,342.52 = 129,358.80/x
  3. Step 3: Cross multiply
    229,960.80x = 317,342.52 × 129,358.80
  4. Step 4: Simplify right side
    229,960.80x = 41,051,047,576.18
  5. Step 5: Solve for x
    x = 41,051,047,576.18/229,960.80
  6. Step 6: Final answer
    x = 178,513.24

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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.