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Finding the Fourth Proportional to 289,871.49, 400,026.78 and 175,134.18

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Solution

The fourth proportional to 289,871.49, 400,026.78 and 175,134.18 is: 241,687.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,871.49 : 400,026.78 = 175,134.18 : x
  2. Step 2: Convert to fraction form
    289,871.49/400,026.78 = 175,134.18/x
  3. Step 3: Cross multiply
    289,871.49x = 400,026.78 × 175,134.18
  4. Step 4: Simplify right side
    289,871.49x = 70,058,362,093.34
  5. Step 5: Solve for x
    x = 70,058,362,093.34/289,871.49
  6. Step 6: Final answer
    x = 241,687.66

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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.