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Finding the Fourth Proportional to 230,146.58, 317,579.58 and 128,181.56

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Solution

The fourth proportional to 230,146.58, 317,579.58 and 128,181.56 is: 176,877.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,146.58 : 317,579.58 = 128,181.56 : x
  2. Step 2: Convert to fraction form
    230,146.58/317,579.58 = 128,181.56/x
  3. Step 3: Cross multiply
    230,146.58x = 317,579.58 × 128,181.56
  4. Step 4: Simplify right side
    230,146.58x = 40,707,844,400.65
  5. Step 5: Solve for x
    x = 40,707,844,400.65/230,146.58
  6. Step 6: Final answer
    x = 176,877.91

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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.