Home / 402,207.20-603,483.60-205,215.20

Finding the Fourth Proportional to 402,207.20, 603,483.60 and 205,215.20

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Solution

The fourth proportional to 402,207.20, 603,483.60 and 205,215.20 is: 307,910.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,207.20 : 603,483.60 = 205,215.20 : x
  2. Step 2: Convert to fraction form
    402,207.20/603,483.60 = 205,215.20/x
  3. Step 3: Cross multiply
    402,207.20x = 603,483.60 × 205,215.20
  4. Step 4: Simplify right side
    402,207.20x = 123,844,007,670.72
  5. Step 5: Solve for x
    x = 123,844,007,670.72/402,207.20
  6. Step 6: Final answer
    x = 307,910.97

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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.