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Finding the Fourth Proportional to 247,329.30, 370,556.55 and 209,712.90

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Solution

The fourth proportional to 247,329.30, 370,556.55 and 209,712.90 is: 314,198.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,329.30 : 370,556.55 = 209,712.90 : x
  2. Step 2: Convert to fraction form
    247,329.30/370,556.55 = 209,712.90/x
  3. Step 3: Cross multiply
    247,329.30x = 370,556.55 × 209,712.90
  4. Step 4: Simplify right side
    247,329.30x = 77,710,488,714.50
  5. Step 5: Solve for x
    x = 77,710,488,714.50/247,329.30
  6. Step 6: Final answer
    x = 314,198.47

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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.