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Finding the Fourth Proportional to 219,886.20, 329,829.30 and 188,393.40

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Solution

The fourth proportional to 219,886.20, 329,829.30 and 188,393.40 is: 282,590.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,886.20 : 329,829.30 = 188,393.40 : x
  2. Step 2: Convert to fraction form
    219,886.20/329,829.30 = 188,393.40/x
  3. Step 3: Cross multiply
    219,886.20x = 329,829.30 × 188,393.40
  4. Step 4: Simplify right side
    219,886.20x = 62,137,663,246.62
  5. Step 5: Solve for x
    x = 62,137,663,246.62/219,886.20
  6. Step 6: Final answer
    x = 282,590.10

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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.