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Finding the Fourth Proportional to 351,618.14, 527,424.93 and 85,376.86

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Solution

The fourth proportional to 351,618.14, 527,424.93 and 85,376.86 is: 128,064.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,618.14 : 527,424.93 = 85,376.86 : x
  2. Step 2: Convert to fraction form
    351,618.14/527,424.93 = 85,376.86/x
  3. Step 3: Cross multiply
    351,618.14x = 527,424.93 × 85,376.86
  4. Step 4: Simplify right side
    351,618.14x = 45,029,883,090.56
  5. Step 5: Solve for x
    x = 45,029,883,090.56/351,618.14
  6. Step 6: Final answer
    x = 128,064.73

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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.