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Finding the Fourth Proportional to 273,931.25, 378,018.09 and 153,073.53

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Solution

The fourth proportional to 273,931.25, 378,018.09 and 153,073.53 is: 211,237.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,931.25 : 378,018.09 = 153,073.53 : x
  2. Step 2: Convert to fraction form
    273,931.25/378,018.09 = 153,073.53/x
  3. Step 3: Cross multiply
    273,931.25x = 378,018.09 × 153,073.53
  4. Step 4: Simplify right side
    273,931.25x = 57,864,563,440.16
  5. Step 5: Solve for x
    x = 57,864,563,440.16/273,931.25
  6. Step 6: Final answer
    x = 211,237.54

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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.