Home / 217,815.80-326,291.70-191,838.20

Finding the Fourth Proportional to 217,815.80, 326,291.70 and 191,838.20

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Solution

The fourth proportional to 217,815.80, 326,291.70 and 191,838.20 is: 287,376.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,815.80 : 326,291.70 = 191,838.20 : x
  2. Step 2: Convert to fraction form
    217,815.80/326,291.70 = 191,838.20/x
  3. Step 3: Cross multiply
    217,815.80x = 326,291.70 × 191,838.20
  4. Step 4: Simplify right side
    217,815.80x = 62,595,212,402.94
  5. Step 5: Solve for x
    x = 62,595,212,402.94/217,815.80
  6. Step 6: Final answer
    x = 287,376.82

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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.