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Finding the Fourth Proportional to 254,812.20, 382,218.30 and 239,065.80

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Solution

The fourth proportional to 254,812.20, 382,218.30 and 239,065.80 is: 358,598.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,812.20 : 382,218.30 = 239,065.80 : x
  2. Step 2: Convert to fraction form
    254,812.20/382,218.30 = 239,065.80/x
  3. Step 3: Cross multiply
    254,812.20x = 382,218.30 × 239,065.80
  4. Step 4: Simplify right side
    254,812.20x = 91,375,323,664.14
  5. Step 5: Solve for x
    x = 91,375,323,664.14/254,812.20
  6. Step 6: Final answer
    x = 358,598.70

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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.