Home / 388,315.67-581,632.19-188,217.47

Finding the Fourth Proportional to 388,315.67, 581,632.19 and 188,217.47

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Solution

The fourth proportional to 388,315.67, 581,632.19 and 188,217.47 is: 281,918.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,315.67 : 581,632.19 = 188,217.47 : x
  2. Step 2: Convert to fraction form
    388,315.67/581,632.19 = 188,217.47/x
  3. Step 3: Cross multiply
    388,315.67x = 581,632.19 × 188,217.47
  4. Step 4: Simplify right side
    388,315.67x = 109,473,341,549.89
  5. Step 5: Solve for x
    x = 109,473,341,549.89/388,315.67
  6. Step 6: Final answer
    x = 281,918.42

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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.