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Finding the Fourth Proportional to 339,468.16, 509,297.57 and 99,587.72

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Solution

The fourth proportional to 339,468.16, 509,297.57 and 99,587.72 is: 149,409.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,468.16 : 509,297.57 = 99,587.72 : x
  2. Step 2: Convert to fraction form
    339,468.16/509,297.57 = 99,587.72/x
  3. Step 3: Cross multiply
    339,468.16x = 509,297.57 × 99,587.72
  4. Step 4: Simplify right side
    339,468.16x = 50,719,784,573.15
  5. Step 5: Solve for x
    x = 50,719,784,573.15/339,468.16
  6. Step 6: Final answer
    x = 149,409.55

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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.