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Finding the Fourth Proportional to 339,272.40, 508,908.60 and 86,552.40

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Solution

The fourth proportional to 339,272.40, 508,908.60 and 86,552.40 is: 129,828.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,272.40 : 508,908.60 = 86,552.40 : x
  2. Step 2: Convert to fraction form
    339,272.40/508,908.60 = 86,552.40/x
  3. Step 3: Cross multiply
    339,272.40x = 508,908.60 × 86,552.40
  4. Step 4: Simplify right side
    339,272.40x = 44,047,260,710.64
  5. Step 5: Solve for x
    x = 44,047,260,710.64/339,272.40
  6. Step 6: Final answer
    x = 129,828.60

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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.