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Finding the Fourth Proportional to 336,098.70, 504,148.05 and 86,780.70

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Solution

The fourth proportional to 336,098.70, 504,148.05 and 86,780.70 is: 130,171.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,098.70 : 504,148.05 = 86,780.70 : x
  2. Step 2: Convert to fraction form
    336,098.70/504,148.05 = 86,780.70/x
  3. Step 3: Cross multiply
    336,098.70x = 504,148.05 × 86,780.70
  4. Step 4: Simplify right side
    336,098.70x = 43,750,320,682.64
  5. Step 5: Solve for x
    x = 43,750,320,682.64/336,098.70
  6. Step 6: Final answer
    x = 130,171.05

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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.