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Finding the Fourth Proportional to 494,553.78, 741,726.88 and 139,484.77

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Solution

The fourth proportional to 494,553.78, 741,726.88 and 139,484.77 is: 209,197.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,553.78 : 741,726.88 = 139,484.77 : x
  2. Step 2: Convert to fraction form
    494,553.78/741,726.88 = 139,484.77/x
  3. Step 3: Cross multiply
    494,553.78x = 741,726.88 × 139,484.77
  4. Step 4: Simplify right side
    494,553.78x = 103,459,601,056.59
  5. Step 5: Solve for x
    x = 103,459,601,056.59/494,553.78
  6. Step 6: Final answer
    x = 209,197.88

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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.