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Finding the Fourth Proportional to 388,812.38, 583,218.57 and 93,324.38

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Solution

The fourth proportional to 388,812.38, 583,218.57 and 93,324.38 is: 139,986.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,812.38 : 583,218.57 = 93,324.38 : x
  2. Step 2: Convert to fraction form
    388,812.38/583,218.57 = 93,324.38/x
  3. Step 3: Cross multiply
    388,812.38x = 583,218.57 × 93,324.38
  4. Step 4: Simplify right side
    388,812.38x = 54,428,508,533.64
  5. Step 5: Solve for x
    x = 54,428,508,533.64/388,812.38
  6. Step 6: Final answer
    x = 139,986.56

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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.