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Finding the Fourth Proportional to 272,881.82, 409,366.47 and 115,133.51

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Solution

The fourth proportional to 272,881.82, 409,366.47 and 115,133.51 is: 172,718.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,881.82 : 409,366.47 = 115,133.51 : x
  2. Step 2: Convert to fraction form
    272,881.82/409,366.47 = 115,133.51/x
  3. Step 3: Cross multiply
    272,881.82x = 409,366.47 × 115,133.51
  4. Step 4: Simplify right side
    272,881.82x = 47,131,800,022.58
  5. Step 5: Solve for x
    x = 47,131,800,022.58/272,881.82
  6. Step 6: Final answer
    x = 172,718.72

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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.