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Finding the Fourth Proportional to 272,728, 376,399.20 and 153,519.04

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Solution

The fourth proportional to 272,728, 376,399.20 and 153,519.04 is: 211,875.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,728 : 376,399.20 = 153,519.04 : x
  2. Step 2: Convert to fraction form
    272,728/376,399.20 = 153,519.04/x
  3. Step 3: Cross multiply
    272,728x = 376,399.20 × 153,519.04
  4. Step 4: Simplify right side
    272,728x = 57,784,443,840.77
  5. Step 5: Solve for x
    x = 57,784,443,840.77/272,728
  6. Step 6: Final answer
    x = 211,875.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.