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Finding the Fourth Proportional to 559,975.20, 839,962.80 and 205,243.80

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Solution

The fourth proportional to 559,975.20, 839,962.80 and 205,243.80 is: 307,865.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,975.20 : 839,962.80 = 205,243.80 : x
  2. Step 2: Convert to fraction form
    559,975.20/839,962.80 = 205,243.80/x
  3. Step 3: Cross multiply
    559,975.20x = 839,962.80 × 205,243.80
  4. Step 4: Simplify right side
    559,975.20x = 172,397,156,930.64
  5. Step 5: Solve for x
    x = 172,397,156,930.64/559,975.20
  6. Step 6: Final answer
    x = 307,865.70

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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.