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Finding the Fourth Proportional to 340,771,685.80, 511,157,528.70 and 136,446,399.40

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Solution

The fourth proportional to 340,771,685.80, 511,157,528.70 and 136,446,399.40 is: 204,669,599.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,771,685.80 : 511,157,528.70 = 136,446,399.40 : x
  2. Step 2: Convert to fraction form
    340,771,685.80/511,157,528.70 = 136,446,399.40/x
  3. Step 3: Cross multiply
    340,771,685.80x = 511,157,528.70 × 136,446,399.40
  4. Step 4: Simplify right side
    340,771,685.80x = 69,745,604,317,317,168
  5. Step 5: Solve for x
    x = 69,745,604,317,317,168/340,771,685.80
  6. Step 6: Final answer
    x = 204,669,599.10

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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.