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Finding the Fourth Proportional to 373,921.21, 560,999.84 and 284,392.78

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Solution

The fourth proportional to 373,921.21, 560,999.84 and 284,392.78 is: 426,678.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,921.21 : 560,999.84 = 284,392.78 : x
  2. Step 2: Convert to fraction form
    373,921.21/560,999.84 = 284,392.78/x
  3. Step 3: Cross multiply
    373,921.21x = 560,999.84 × 284,392.78
  4. Step 4: Simplify right side
    373,921.21x = 159,544,301,252.69
  5. Step 5: Solve for x
    x = 159,544,301,252.69/373,921.21
  6. Step 6: Final answer
    x = 426,678.93

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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.