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Finding the Fourth Proportional to 339,138.72, 468,017.28 and 186,191.10

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Solution

The fourth proportional to 339,138.72, 468,017.28 and 186,191.10 is: 256,946.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,138.72 : 468,017.28 = 186,191.10 : x
  2. Step 2: Convert to fraction form
    339,138.72/468,017.28 = 186,191.10/x
  3. Step 3: Cross multiply
    339,138.72x = 468,017.28 × 186,191.10
  4. Step 4: Simplify right side
    339,138.72x = 87,140,652,182.21
  5. Step 5: Solve for x
    x = 87,140,652,182.21/339,138.72
  6. Step 6: Final answer
    x = 256,946.93

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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.