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Finding the Fourth Proportional to 230,404.68, 317,959.92 and 128,436.62

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Solution

The fourth proportional to 230,404.68, 317,959.92 and 128,436.62 is: 177,243.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,404.68 : 317,959.92 = 128,436.62 : x
  2. Step 2: Convert to fraction form
    230,404.68/317,959.92 = 128,436.62/x
  3. Step 3: Cross multiply
    230,404.68x = 317,959.92 × 128,436.62
  4. Step 4: Simplify right side
    230,404.68x = 40,837,695,830.47
  5. Step 5: Solve for x
    x = 40,837,695,830.47/230,404.68
  6. Step 6: Final answer
    x = 177,243.34

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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.