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Finding the Fourth Proportional to 578,175.15, 866,764.02 and 278,243.13

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Solution

The fourth proportional to 578,175.15, 866,764.02 and 278,243.13 is: 417,124.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,175.15 : 866,764.02 = 278,243.13 : x
  2. Step 2: Convert to fraction form
    578,175.15/866,764.02 = 278,243.13/x
  3. Step 3: Cross multiply
    578,175.15x = 866,764.02 × 278,243.13
  4. Step 4: Simplify right side
    578,175.15x = 241,171,133,896.18
  5. Step 5: Solve for x
    x = 241,171,133,896.18/578,175.15
  6. Step 6: Final answer
    x = 417,124.70

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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.