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Finding the Fourth Proportional to 351,688.56, 527,533.44 and 85,449.20

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Solution

The fourth proportional to 351,688.56, 527,533.44 and 85,449.20 is: 128,173.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,688.56 : 527,533.44 = 85,449.20 : x
  2. Step 2: Convert to fraction form
    351,688.56/527,533.44 = 85,449.20/x
  3. Step 3: Cross multiply
    351,688.56x = 527,533.44 × 85,449.20
  4. Step 4: Simplify right side
    351,688.56x = 45,077,310,421.25
  5. Step 5: Solve for x
    x = 45,077,310,421.25/351,688.56
  6. Step 6: Final answer
    x = 128,173.95

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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.