Home / 231,433.77-319,408.14-129,464.90

Finding the Fourth Proportional to 231,433.77, 319,408.14 and 129,464.90

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Solution

The fourth proportional to 231,433.77, 319,408.14 and 129,464.90 is: 178,678.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,433.77 : 319,408.14 = 129,464.90 : x
  2. Step 2: Convert to fraction form
    231,433.77/319,408.14 = 129,464.90/x
  3. Step 3: Cross multiply
    231,433.77x = 319,408.14 × 129,464.90
  4. Step 4: Simplify right side
    231,433.77x = 41,352,141,307.25
  5. Step 5: Solve for x
    x = 41,352,141,307.25/231,433.77
  6. Step 6: Final answer
    x = 178,678.08

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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.