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Finding the Fourth Proportional to 273,981, 378,096 and 153,127.38

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Solution

The fourth proportional to 273,981, 378,096 and 153,127.38 is: 211,317.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,981 : 378,096 = 153,127.38 : x
  2. Step 2: Convert to fraction form
    273,981/378,096 = 153,127.38/x
  3. Step 3: Cross multiply
    273,981x = 378,096 × 153,127.38
  4. Step 4: Simplify right side
    273,981x = 57,896,849,868.48
  5. Step 5: Solve for x
    x = 57,896,849,868.48/273,981
  6. Step 6: Final answer
    x = 211,317.03

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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.