Home / 230,278.67-317,807.96-128,320.73

Finding the Fourth Proportional to 230,278.67, 317,807.96 and 128,320.73

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Solution

The fourth proportional to 230,278.67, 317,807.96 and 128,320.73 is: 177,095.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,278.67 : 317,807.96 = 128,320.73 : x
  2. Step 2: Convert to fraction form
    230,278.67/317,807.96 = 128,320.73/x
  3. Step 3: Cross multiply
    230,278.67x = 317,807.96 × 128,320.73
  4. Step 4: Simplify right side
    230,278.67x = 40,781,347,196.37
  5. Step 5: Solve for x
    x = 40,781,347,196.37/230,278.67
  6. Step 6: Final answer
    x = 177,095.64

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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.