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Finding the Fourth Proportional to 213,591,372.80, 299,708,166.40 and 213,591,372.80

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Solution

The fourth proportional to 213,591,372.80, 299,708,166.40 and 213,591,372.80 is: 299,708,166.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,591,372.80 : 299,708,166.40 = 213,591,372.80 : x
  2. Step 2: Convert to fraction form
    213,591,372.80/299,708,166.40 = 213,591,372.80/x
  3. Step 3: Cross multiply
    213,591,372.80x = 299,708,166.40 × 213,591,372.80
  4. Step 4: Simplify right side
    213,591,372.80x = 64,015,078,700,746,832
  5. Step 5: Solve for x
    x = 64,015,078,700,746,832/213,591,372.80
  6. Step 6: Final answer
    x = 299,708,166.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.