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Finding the Fourth Proportional to 272,965.84, 376,773.96 and 172,430.80

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Solution

The fourth proportional to 272,965.84, 376,773.96 and 172,430.80 is: 238,005.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,965.84 : 376,773.96 = 172,430.80 : x
  2. Step 2: Convert to fraction form
    272,965.84/376,773.96 = 172,430.80/x
  3. Step 3: Cross multiply
    272,965.84x = 376,773.96 × 172,430.80
  4. Step 4: Simplify right side
    272,965.84x = 64,967,435,341.97
  5. Step 5: Solve for x
    x = 64,967,435,341.97/272,965.84
  6. Step 6: Final answer
    x = 238,005.73

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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.