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Finding the Fourth Proportional to 20,219,199.40, 30,328,799.10 and 20,219,199.40

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Solution

The fourth proportional to 20,219,199.40, 30,328,799.10 and 20,219,199.40 is: 30,328,799.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219,199.40 : 30,328,799.10 = 20,219,199.40 : x
  2. Step 2: Convert to fraction form
    20,219,199.40/30,328,799.10 = 20,219,199.40/x
  3. Step 3: Cross multiply
    20,219,199.40x = 30,328,799.10 × 20,219,199.40
  4. Step 4: Simplify right side
    20,219,199.40x = 613,224,036,565,440.50
  5. Step 5: Solve for x
    x = 613,224,036,565,440.50/20,219,199.40
  6. Step 6: Final answer
    x = 30,328,799.10

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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.