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Finding the Fourth Proportional to 351,880.68, 527,813.64 and 85,642.68

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Solution

The fourth proportional to 351,880.68, 527,813.64 and 85,642.68 is: 128,462.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,880.68 : 527,813.64 = 85,642.68 : x
  2. Step 2: Convert to fraction form
    351,880.68/527,813.64 = 85,642.68/x
  3. Step 3: Cross multiply
    351,880.68x = 527,813.64 × 85,642.68
  4. Step 4: Simplify right side
    351,880.68x = 45,203,374,670.16
  5. Step 5: Solve for x
    x = 45,203,374,670.16/351,880.68
  6. Step 6: Final answer
    x = 128,462.22

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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.