Home / 230,447.16-318,035.52-128,505.78

Finding the Fourth Proportional to 230,447.16, 318,035.52 and 128,505.78

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Solution

The fourth proportional to 230,447.16, 318,035.52 and 128,505.78 is: 177,348.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,447.16 : 318,035.52 = 128,505.78 : x
  2. Step 2: Convert to fraction form
    230,447.16/318,035.52 = 128,505.78/x
  3. Step 3: Cross multiply
    230,447.16x = 318,035.52 × 128,505.78
  4. Step 4: Simplify right side
    230,447.16x = 40,869,402,565.31
  5. Step 5: Solve for x
    x = 40,869,402,565.31/230,447.16
  6. Step 6: Final answer
    x = 177,348.26

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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.