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Finding the Fourth Proportional to 608,339.20, 912,422.40 and 208,998.40

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Solution

The fourth proportional to 608,339.20, 912,422.40 and 208,998.40 is: 313,467.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,339.20 : 912,422.40 = 208,998.40 : x
  2. Step 2: Convert to fraction form
    608,339.20/912,422.40 = 208,998.40/x
  3. Step 3: Cross multiply
    608,339.20x = 912,422.40 × 208,998.40
  4. Step 4: Simplify right side
    608,339.20x = 190,694,821,724.16
  5. Step 5: Solve for x
    x = 190,694,821,724.16/608,339.20
  6. Step 6: Final answer
    x = 313,467.92

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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.