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Finding the Fourth Proportional to 578,216.20, 867,713.10 and 262,510.60

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Solution

The fourth proportional to 578,216.20, 867,713.10 and 262,510.60 is: 393,942.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,216.20 : 867,713.10 = 262,510.60 : x
  2. Step 2: Convert to fraction form
    578,216.20/867,713.10 = 262,510.60/x
  3. Step 3: Cross multiply
    578,216.20x = 867,713.10 × 262,510.60
  4. Step 4: Simplify right side
    578,216.20x = 227,783,886,508.86
  5. Step 5: Solve for x
    x = 227,783,886,508.86/578,216.20
  6. Step 6: Final answer
    x = 393,942.42

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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.