Home / 289,067.40-433,603.84-129,151.38

Finding the Fourth Proportional to 289,067.40, 433,603.84 and 129,151.38

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Solution

The fourth proportional to 289,067.40, 433,603.84 and 129,151.38 is: 193,728.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,067.40 : 433,603.84 = 129,151.38 : x
  2. Step 2: Convert to fraction form
    289,067.40/433,603.84 = 129,151.38/x
  3. Step 3: Cross multiply
    289,067.40x = 433,603.84 × 129,151.38
  4. Step 4: Simplify right side
    289,067.40x = 56,000,534,309.30
  5. Step 5: Solve for x
    x = 56,000,534,309.30/289,067.40
  6. Step 6: Final answer
    x = 193,728.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.