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Finding the Fourth Proportional to 217,830,896.40, 326,746,344.60 and 191,471,422.80

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Solution

The fourth proportional to 217,830,896.40, 326,746,344.60 and 191,471,422.80 is: 287,207,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,830,896.40 : 326,746,344.60 = 191,471,422.80 : x
  2. Step 2: Convert to fraction form
    217,830,896.40/326,746,344.60 = 191,471,422.80/x
  3. Step 3: Cross multiply
    217,830,896.40x = 326,746,344.60 × 191,471,422.80
  4. Step 4: Simplify right side
    217,830,896.40x = 62,562,587,495,261,104
  5. Step 5: Solve for x
    x = 62,562,587,495,261,104/217,830,896.40
  6. Step 6: Final answer
    x = 287,207,134.20

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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.