Home / 388,721.88-581,766.11-239,057.10

Finding the Fourth Proportional to 388,721.88, 581,766.11 and 239,057.10

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Solution

The fourth proportional to 388,721.88, 581,766.11 and 239,057.10 is: 357,775.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,721.88 : 581,766.11 = 239,057.10 : x
  2. Step 2: Convert to fraction form
    388,721.88/581,766.11 = 239,057.10/x
  3. Step 3: Cross multiply
    388,721.88x = 581,766.11 × 239,057.10
  4. Step 4: Simplify right side
    388,721.88x = 139,075,319,134.88
  5. Step 5: Solve for x
    x = 139,075,319,134.88/388,721.88
  6. Step 6: Final answer
    x = 357,775.90

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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.