Home / 389,455.13-583,963.55-268,018.31

Finding the Fourth Proportional to 389,455.13, 583,963.55 and 268,018.31

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Solution

The fourth proportional to 389,455.13, 583,963.55 and 268,018.31 is: 401,876.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,455.13 : 583,963.55 = 268,018.31 : x
  2. Step 2: Convert to fraction form
    389,455.13/583,963.55 = 268,018.31/x
  3. Step 3: Cross multiply
    389,455.13x = 583,963.55 × 268,018.31
  4. Step 4: Simplify right side
    389,455.13x = 156,512,919,512.69
  5. Step 5: Solve for x
    x = 156,512,919,512.69/389,455.13
  6. Step 6: Final answer
    x = 401,876.65

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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.