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Finding the Fourth Proportional to 481,532.33, 722,128.05 and 139,904.70

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Solution

The fourth proportional to 481,532.33, 722,128.05 and 139,904.70 is: 209,807.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,532.33 : 722,128.05 = 139,904.70 : x
  2. Step 2: Convert to fraction form
    481,532.33/722,128.05 = 139,904.70/x
  3. Step 3: Cross multiply
    481,532.33x = 722,128.05 × 139,904.70
  4. Step 4: Simplify right side
    481,532.33x = 101,029,108,196.84
  5. Step 5: Solve for x
    x = 101,029,108,196.84/481,532.33
  6. Step 6: Final answer
    x = 209,807.53

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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.