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Finding the Fourth Proportional to 217,735,009.20, 326,602,513.80 and 217,735,009.20

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Solution

The fourth proportional to 217,735,009.20, 326,602,513.80 and 217,735,009.20 is: 326,602,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,735,009.20 : 326,602,513.80 = 217,735,009.20 : x
  2. Step 2: Convert to fraction form
    217,735,009.20/326,602,513.80 = 217,735,009.20/x
  3. Step 3: Cross multiply
    217,735,009.20x = 326,602,513.80 × 217,735,009.20
  4. Step 4: Simplify right side
    217,735,009.20x = 71,112,801,346,986,128
  5. Step 5: Solve for x
    x = 71,112,801,346,986,128/217,735,009.20
  6. Step 6: Final answer
    x = 326,602,513.80

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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.