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Finding the Fourth Proportional to 272,681.28, 408,831.21 and 120,804.39

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Solution

The fourth proportional to 272,681.28, 408,831.21 and 120,804.39 is: 181,122.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,681.28 : 408,831.21 = 120,804.39 : x
  2. Step 2: Convert to fraction form
    272,681.28/408,831.21 = 120,804.39/x
  3. Step 3: Cross multiply
    272,681.28x = 408,831.21 × 120,804.39
  4. Step 4: Simplify right side
    272,681.28x = 49,388,604,937.01
  5. Step 5: Solve for x
    x = 49,388,604,937.01/272,681.28
  6. Step 6: Final answer
    x = 181,122.10

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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.