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Finding the Fourth Proportional to 231,425.86, 319,352.66 and 129,433.67

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Solution

The fourth proportional to 231,425.86, 319,352.66 and 129,433.67 is: 178,610.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,425.86 : 319,352.66 = 129,433.67 : x
  2. Step 2: Convert to fraction form
    231,425.86/319,352.66 = 129,433.67/x
  3. Step 3: Cross multiply
    231,425.86x = 319,352.66 × 129,433.67
  4. Step 4: Simplify right side
    231,425.86x = 41,334,985,260.86
  5. Step 5: Solve for x
    x = 41,334,985,260.86/231,425.86
  6. Step 6: Final answer
    x = 178,610.05

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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.