Home / 231,811.47-319,878.32-131,209.47

Finding the Fourth Proportional to 231,811.47, 319,878.32 and 131,209.47

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Solution

The fourth proportional to 231,811.47, 319,878.32 and 131,209.47 is: 181,056.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,811.47 : 319,878.32 = 131,209.47 : x
  2. Step 2: Convert to fraction form
    231,811.47/319,878.32 = 131,209.47/x
  3. Step 3: Cross multiply
    231,811.47x = 319,878.32 × 131,209.47
  4. Step 4: Simplify right side
    231,811.47x = 41,971,064,175.64
  5. Step 5: Solve for x
    x = 41,971,064,175.64/231,811.47
  6. Step 6: Final answer
    x = 181,056.89

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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.