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Finding the Fourth Proportional to 231,560.88, 319,519.80 and 130,956.72

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Solution

The fourth proportional to 231,560.88, 319,519.80 and 130,956.72 is: 180,700.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,560.88 : 319,519.80 = 130,956.72 : x
  2. Step 2: Convert to fraction form
    231,560.88/319,519.80 = 130,956.72/x
  3. Step 3: Cross multiply
    231,560.88x = 319,519.80 × 130,956.72
  4. Step 4: Simplify right side
    231,560.88x = 41,843,264,983.06
  5. Step 5: Solve for x
    x = 41,843,264,983.06/231,560.88
  6. Step 6: Final answer
    x = 180,700.92

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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.