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Finding the Fourth Proportional to 371,521.82, 557,210.19 and 118,734.50

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Solution

The fourth proportional to 371,521.82, 557,210.19 and 118,734.50 is: 178,078.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,521.82 : 557,210.19 = 118,734.50 : x
  2. Step 2: Convert to fraction form
    371,521.82/557,210.19 = 118,734.50/x
  3. Step 3: Cross multiply
    371,521.82x = 557,210.19 × 118,734.50
  4. Step 4: Simplify right side
    371,521.82x = 66,160,073,304.56
  5. Step 5: Solve for x
    x = 66,160,073,304.56/371,521.82
  6. Step 6: Final answer
    x = 178,078.57

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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.