Home / 230,756.29-318,443.00-128,780.66

Finding the Fourth Proportional to 230,756.29, 318,443.00 and 128,780.66

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Solution

The fourth proportional to 230,756.29, 318,443.00 and 128,780.66 is: 177,716.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,756.29 : 318,443.00 = 128,780.66 : x
  2. Step 2: Convert to fraction form
    230,756.29/318,443.00 = 128,780.66/x
  3. Step 3: Cross multiply
    230,756.29x = 318,443.00 × 128,780.66
  4. Step 4: Simplify right side
    230,756.29x = 41,009,299,864.58
  5. Step 5: Solve for x
    x = 41,009,299,864.58/230,756.29
  6. Step 6: Final answer
    x = 177,716.93

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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.