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Finding the Fourth Proportional to 608,570.64, 912,876.78 and 209,208

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Solution

The fourth proportional to 608,570.64, 912,876.78 and 209,208 is: 313,819.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,570.64 : 912,876.78 = 209,208 : x
  2. Step 2: Convert to fraction form
    608,570.64/912,876.78 = 209,208/x
  3. Step 3: Cross multiply
    608,570.64x = 912,876.78 × 209,208
  4. Step 4: Simplify right side
    608,570.64x = 190,981,125,390.24
  5. Step 5: Solve for x
    x = 190,981,125,390.24/608,570.64
  6. Step 6: Final answer
    x = 313,819.16

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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.