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Finding the Fourth Proportional to 467,358, 644,999.55 and 276,432.90

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Solution

The fourth proportional to 467,358, 644,999.55 and 276,432.90 is: 381,504.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,358 : 644,999.55 = 276,432.90 : x
  2. Step 2: Convert to fraction form
    467,358/644,999.55 = 276,432.90/x
  3. Step 3: Cross multiply
    467,358x = 644,999.55 × 276,432.90
  4. Step 4: Simplify right side
    467,358x = 178,299,096,105.20
  5. Step 5: Solve for x
    x = 178,299,096,105.20/467,358
  6. Step 6: Final answer
    x = 381,504.32

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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.