Home / 388,216.14-581,731.29-261,387.96

Finding the Fourth Proportional to 388,216.14, 581,731.29 and 261,387.96

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Solution

The fourth proportional to 388,216.14, 581,731.29 and 261,387.96 is: 391,682.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,216.14 : 581,731.29 = 261,387.96 : x
  2. Step 2: Convert to fraction form
    388,216.14/581,731.29 = 261,387.96/x
  3. Step 3: Cross multiply
    388,216.14x = 581,731.29 × 261,387.96
  4. Step 4: Simplify right side
    388,216.14x = 152,057,555,161.27
  5. Step 5: Solve for x
    x = 152,057,555,161.27/388,216.14
  6. Step 6: Final answer
    x = 391,682.72

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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.