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Finding the Fourth Proportional to 251,878.33, 377,843.99 and 145,259.86

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Solution

The fourth proportional to 251,878.33, 377,843.99 and 145,259.86 is: 217,905.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,878.33 : 377,843.99 = 145,259.86 : x
  2. Step 2: Convert to fraction form
    251,878.33/377,843.99 = 145,259.86/x
  3. Step 3: Cross multiply
    251,878.33x = 377,843.99 × 145,259.86
  4. Step 4: Simplify right side
    251,878.33x = 54,885,564,362.94
  5. Step 5: Solve for x
    x = 54,885,564,362.94/251,878.33
  6. Step 6: Final answer
    x = 217,905.07

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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.