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Finding the Fourth Proportional to 559,978.80, 839,968.20 and 186,001.80

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Solution

The fourth proportional to 559,978.80, 839,968.20 and 186,001.80 is: 279,002.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,978.80 : 839,968.20 = 186,001.80 : x
  2. Step 2: Convert to fraction form
    559,978.80/839,968.20 = 186,001.80/x
  3. Step 3: Cross multiply
    559,978.80x = 839,968.20 × 186,001.80
  4. Step 4: Simplify right side
    559,978.80x = 156,235,597,142.76
  5. Step 5: Solve for x
    x = 156,235,597,142.76/559,978.80
  6. Step 6: Final answer
    x = 279,002.70

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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.