Home / 388,121.78-581,985.78-177,579.30

Finding the Fourth Proportional to 388,121.78, 581,985.78 and 177,579.30

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Solution

The fourth proportional to 388,121.78, 581,985.78 and 177,579.30 is: 266,278.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,121.78 : 581,985.78 = 177,579.30 : x
  2. Step 2: Convert to fraction form
    388,121.78/581,985.78 = 177,579.30/x
  3. Step 3: Cross multiply
    388,121.78x = 581,985.78 × 177,579.30
  4. Step 4: Simplify right side
    388,121.78x = 103,348,627,422.35
  5. Step 5: Solve for x
    x = 103,348,627,422.35/388,121.78
  6. Step 6: Final answer
    x = 266,278.87

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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.