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Finding the Fourth Proportional to 231,326.88, 319,213.36 and 140,670.32

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Solution

The fourth proportional to 231,326.88, 319,213.36 and 140,670.32 is: 194,114.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,326.88 : 319,213.36 = 140,670.32 : x
  2. Step 2: Convert to fraction form
    231,326.88/319,213.36 = 140,670.32/x
  3. Step 3: Cross multiply
    231,326.88x = 319,213.36 × 140,670.32
  4. Step 4: Simplify right side
    231,326.88x = 44,903,845,499.48
  5. Step 5: Solve for x
    x = 44,903,845,499.48/231,326.88
  6. Step 6: Final answer
    x = 194,114.26

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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.