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Finding the Fourth Proportional to 559,977.20, 839,965.80 and 205,002.80

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Solution

The fourth proportional to 559,977.20, 839,965.80 and 205,002.80 is: 307,504.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,977.20 : 839,965.80 = 205,002.80 : x
  2. Step 2: Convert to fraction form
    559,977.20/839,965.80 = 205,002.80/x
  3. Step 3: Cross multiply
    559,977.20x = 839,965.80 × 205,002.80
  4. Step 4: Simplify right side
    559,977.20x = 172,195,340,904.24
  5. Step 5: Solve for x
    x = 172,195,340,904.24/559,977.20
  6. Step 6: Final answer
    x = 307,504.20

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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.