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Finding the Fourth Proportional to 273,988.75, 378,079.17 and 153,113.26

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Solution

The fourth proportional to 273,988.75, 378,079.17 and 153,113.26 is: 211,282.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,988.75 : 378,079.17 = 153,113.26 : x
  2. Step 2: Convert to fraction form
    273,988.75/378,079.17 = 153,113.26/x
  3. Step 3: Cross multiply
    273,988.75x = 378,079.17 × 153,113.26
  4. Step 4: Simplify right side
    273,988.75x = 57,888,934,256.79
  5. Step 5: Solve for x
    x = 57,888,934,256.79/273,988.75
  6. Step 6: Final answer
    x = 211,282.16

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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.