Home / 230,538.89-318,145.12-128,570.83

Finding the Fourth Proportional to 230,538.89, 318,145.12 and 128,570.83

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Solution

The fourth proportional to 230,538.89, 318,145.12 and 128,570.83 is: 177,428.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,538.89 : 318,145.12 = 128,570.83 : x
  2. Step 2: Convert to fraction form
    230,538.89/318,145.12 = 128,570.83/x
  3. Step 3: Cross multiply
    230,538.89x = 318,145.12 × 128,570.83
  4. Step 4: Simplify right side
    230,538.89x = 40,904,181,022.06
  5. Step 5: Solve for x
    x = 40,904,181,022.06/230,538.89
  6. Step 6: Final answer
    x = 177,428.55

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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.