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Finding the Fourth Proportional to 371,672.40, 557,529.72 and 105,411.84

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Solution

The fourth proportional to 371,672.40, 557,529.72 and 105,411.84 is: 158,123.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,672.40 : 557,529.72 = 105,411.84 : x
  2. Step 2: Convert to fraction form
    371,672.40/557,529.72 = 105,411.84/x
  3. Step 3: Cross multiply
    371,672.40x = 557,529.72 × 105,411.84
  4. Step 4: Simplify right side
    371,672.40x = 58,770,233,639.88
  5. Step 5: Solve for x
    x = 58,770,233,639.88/371,672.40
  6. Step 6: Final answer
    x = 158,123.75

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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.