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Finding the Fourth Proportional to 399,081.02, 598,621.62 and 266,220.86

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Solution

The fourth proportional to 399,081.02, 598,621.62 and 266,220.86 is: 399,331.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,081.02 : 598,621.62 = 266,220.86 : x
  2. Step 2: Convert to fraction form
    399,081.02/598,621.62 = 266,220.86/x
  3. Step 3: Cross multiply
    399,081.02x = 598,621.62 × 266,220.86
  4. Step 4: Simplify right side
    399,081.02x = 159,365,562,490.99
  5. Step 5: Solve for x
    x = 159,365,562,490.99/399,081.02
  6. Step 6: Final answer
    x = 399,331.35

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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.