Home / 231,403.98-319,344.75-130,808.46

Finding the Fourth Proportional to 231,403.98, 319,344.75 and 130,808.46

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Solution

The fourth proportional to 231,403.98, 319,344.75 and 130,808.46 is: 180,519.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,403.98 : 319,344.75 = 130,808.46 : x
  2. Step 2: Convert to fraction form
    231,403.98/319,344.75 = 130,808.46/x
  3. Step 3: Cross multiply
    231,403.98x = 319,344.75 × 130,808.46
  4. Step 4: Simplify right side
    231,403.98x = 41,772,994,956.59
  5. Step 5: Solve for x
    x = 41,772,994,956.59/231,403.98
  6. Step 6: Final answer
    x = 180,519.78

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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.