Home / 287,665,672.20-431,002,496.70-133,996,554.60

Finding the Fourth Proportional to 287,665,672.20, 431,002,496.70 and 133,996,554.60

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Solution

The fourth proportional to 287,665,672.20, 431,002,496.70 and 133,996,554.60 is: 200,763,786.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,665,672.20 : 431,002,496.70 = 133,996,554.60 : x
  2. Step 2: Convert to fraction form
    287,665,672.20/431,002,496.70 = 133,996,554.60/x
  3. Step 3: Cross multiply
    287,665,672.20x = 431,002,496.70 × 133,996,554.60
  4. Step 4: Simplify right side
    287,665,672.20x = 57,752,849,581,797,864
  5. Step 5: Solve for x
    x = 57,752,849,581,797,864/287,665,672.20
  6. Step 6: Final answer
    x = 200,763,786.45

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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.