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Finding the Fourth Proportional to 238,239.77, 357,283.87 and 78,278.83

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Solution

The fourth proportional to 238,239.77, 357,283.87 and 78,278.83 is: 117,393.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,239.77 : 357,283.87 = 78,278.83 : x
  2. Step 2: Convert to fraction form
    238,239.77/357,283.87 = 78,278.83/x
  3. Step 3: Cross multiply
    238,239.77x = 357,283.87 × 78,278.83
  4. Step 4: Simplify right side
    238,239.77x = 27,967,763,321.47
  5. Step 5: Solve for x
    x = 27,967,763,321.47/238,239.77
  6. Step 6: Final answer
    x = 117,393.34

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1.5x scale

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.