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Finding the Fourth Proportional to 230,350.44, 317,893.32 and 128,376

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Solution

The fourth proportional to 230,350.44, 317,893.32 and 128,376 is: 177,164.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,350.44 : 317,893.32 = 128,376 : x
  2. Step 2: Convert to fraction form
    230,350.44/317,893.32 = 128,376/x
  3. Step 3: Cross multiply
    230,350.44x = 317,893.32 × 128,376
  4. Step 4: Simplify right side
    230,350.44x = 40,809,872,848.32
  5. Step 5: Solve for x
    x = 40,809,872,848.32/230,350.44
  6. Step 6: Final answer
    x = 177,164.29

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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.