Home / 389,747.64-584,807.28-269,989.20

Finding the Fourth Proportional to 389,747.64, 584,807.28 and 269,989.20

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Solution

The fourth proportional to 389,747.64, 584,807.28 and 269,989.20 is: 405,112.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,747.64 : 584,807.28 = 269,989.20 : x
  2. Step 2: Convert to fraction form
    389,747.64/584,807.28 = 269,989.20/x
  3. Step 3: Cross multiply
    389,747.64x = 584,807.28 × 269,989.20
  4. Step 4: Simplify right side
    389,747.64x = 157,891,649,681.38
  5. Step 5: Solve for x
    x = 157,891,649,681.38/389,747.64
  6. Step 6: Final answer
    x = 405,112.52

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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.