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Finding the Fourth Proportional to 20,219,914.40, 30,329,871.60 and 20,219,914.40

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Solution

The fourth proportional to 20,219,914.40, 30,329,871.60 and 20,219,914.40 is: 30,329,871.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219,914.40 : 30,329,871.60 = 20,219,914.40 : x
  2. Step 2: Convert to fraction form
    20,219,914.40/30,329,871.60 = 20,219,914.40/x
  3. Step 3: Cross multiply
    20,219,914.40x = 30,329,871.60 × 20,219,914.40
  4. Step 4: Simplify right side
    20,219,914.40x = 613,267,407,514,991
  5. Step 5: Solve for x
    x = 613,267,407,514,991/20,219,914.40
  6. Step 6: Final answer
    x = 30,329,871.60

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1.5x scale

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.