Home / 388,118.78-581,981.28-177,576.29

Finding the Fourth Proportional to 388,118.78, 581,981.28 and 177,576.29

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Solution

The fourth proportional to 388,118.78, 581,981.28 and 177,576.29 is: 266,274.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,118.78 : 581,981.28 = 177,576.29 : x
  2. Step 2: Convert to fraction form
    388,118.78/581,981.28 = 177,576.29/x
  3. Step 3: Cross multiply
    388,118.78x = 581,981.28 × 177,576.29
  4. Step 4: Simplify right side
    388,118.78x = 103,346,073,641.95
  5. Step 5: Solve for x
    x = 103,346,073,641.95/388,118.78
  6. Step 6: Final answer
    x = 266,274.35

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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.