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Finding the Fourth Proportional to 639,274.06, 958,661.79 and 239,697.10

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Solution

The fourth proportional to 639,274.06, 958,661.79 and 239,697.10 is: 359,452.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,274.06 : 958,661.79 = 239,697.10 : x
  2. Step 2: Convert to fraction form
    639,274.06/958,661.79 = 239,697.10/x
  3. Step 3: Cross multiply
    639,274.06x = 958,661.79 × 239,697.10
  4. Step 4: Simplify right side
    639,274.06x = 229,788,450,943.81
  5. Step 5: Solve for x
    x = 229,788,450,943.81/639,274.06
  6. Step 6: Final answer
    x = 359,452.17

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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.