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Finding the Fourth Proportional to 336,143.20, 504,214.80 and 86,825.20

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Solution

The fourth proportional to 336,143.20, 504,214.80 and 86,825.20 is: 130,237.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,143.20 : 504,214.80 = 86,825.20 : x
  2. Step 2: Convert to fraction form
    336,143.20/504,214.80 = 86,825.20/x
  3. Step 3: Cross multiply
    336,143.20x = 504,214.80 × 86,825.20
  4. Step 4: Simplify right side
    336,143.20x = 43,778,550,852.96
  5. Step 5: Solve for x
    x = 43,778,550,852.96/336,143.20
  6. Step 6: Final answer
    x = 130,237.80

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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.