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Finding the Fourth Proportional to 481,718.48, 664,809 and 266,878.40

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Solution

The fourth proportional to 481,718.48, 664,809 and 266,878.40 is: 368,312.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,718.48 : 664,809 = 266,878.40 : x
  2. Step 2: Convert to fraction form
    481,718.48/664,809 = 266,878.40/x
  3. Step 3: Cross multiply
    481,718.48x = 664,809 × 266,878.40
  4. Step 4: Simplify right side
    481,718.48x = 177,423,162,225.60
  5. Step 5: Solve for x
    x = 177,423,162,225.60/481,718.48
  6. Step 6: Final answer
    x = 368,312.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.