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Finding the Fourth Proportional to 315,395.56, 435,180.90 and 181,233.64

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Solution

The fourth proportional to 315,395.56, 435,180.90 and 181,233.64 is: 250,065.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,395.56 : 435,180.90 = 181,233.64 : x
  2. Step 2: Convert to fraction form
    315,395.56/435,180.90 = 181,233.64/x
  3. Step 3: Cross multiply
    315,395.56x = 435,180.90 × 181,233.64
  4. Step 4: Simplify right side
    315,395.56x = 78,869,418,565.48
  5. Step 5: Solve for x
    x = 78,869,418,565.48/315,395.56
  6. Step 6: Final answer
    x = 250,065.09

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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.