Home / 217,609,128.40-326,413,692.60-168,291,403.60

Finding the Fourth Proportional to 217,609,128.40, 326,413,692.60 and 168,291,403.60

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Solution

The fourth proportional to 217,609,128.40, 326,413,692.60 and 168,291,403.60 is: 252,437,105.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,609,128.40 : 326,413,692.60 = 168,291,403.60 : x
  2. Step 2: Convert to fraction form
    217,609,128.40/326,413,692.60 = 168,291,403.60/x
  3. Step 3: Cross multiply
    217,609,128.40x = 326,413,692.60 × 168,291,403.60
  4. Step 4: Simplify right side
    217,609,128.40x = 54,932,618,481,912,936
  5. Step 5: Solve for x
    x = 54,932,618,481,912,936/217,609,128.40
  6. Step 6: Final answer
    x = 252,437,105.40

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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.