Home / 287,747.10-431,620.65-228,260.70

Finding the Fourth Proportional to 287,747.10, 431,620.65 and 228,260.70

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Solution

The fourth proportional to 287,747.10, 431,620.65 and 228,260.70 is: 342,391.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,747.10 : 431,620.65 = 228,260.70 : x
  2. Step 2: Convert to fraction form
    287,747.10/431,620.65 = 228,260.70/x
  3. Step 3: Cross multiply
    287,747.10x = 431,620.65 × 228,260.70
  4. Step 4: Simplify right side
    287,747.10x = 98,522,031,703.46
  5. Step 5: Solve for x
    x = 98,522,031,703.46/287,747.10
  6. Step 6: Final answer
    x = 342,391.05

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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.