Home / 287,388,002.80-431,082,004.20-82,922,748.40

Finding the Fourth Proportional to 287,388,002.80, 431,082,004.20 and 82,922,748.40

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Solution

The fourth proportional to 287,388,002.80, 431,082,004.20 and 82,922,748.40 is: 124,384,122.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,388,002.80 : 431,082,004.20 = 82,922,748.40 : x
  2. Step 2: Convert to fraction form
    287,388,002.80/431,082,004.20 = 82,922,748.40/x
  3. Step 3: Cross multiply
    287,388,002.80x = 431,082,004.20 × 82,922,748.40
  4. Step 4: Simplify right side
    287,388,002.80x = 35,746,504,574,044,344
  5. Step 5: Solve for x
    x = 35,746,504,574,044,344/287,388,002.80
  6. Step 6: Final answer
    x = 124,384,122.60

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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.