Home / 286,426.80-428,985.77-136,771.92

Finding the Fourth Proportional to 286,426.80, 428,985.77 and 136,771.92

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Solution

The fourth proportional to 286,426.80, 428,985.77 and 136,771.92 is: 204,845.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,426.80 : 428,985.77 = 136,771.92 : x
  2. Step 2: Convert to fraction form
    286,426.80/428,985.77 = 136,771.92/x
  3. Step 3: Cross multiply
    286,426.80x = 428,985.77 × 136,771.92
  4. Step 4: Simplify right side
    286,426.80x = 58,673,206,731.72
  5. Step 5: Solve for x
    x = 58,673,206,731.72/286,426.80
  6. Step 6: Final answer
    x = 204,845.38

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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.