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Finding the Fourth Proportional to 238,370.50, 357,479.82 and 78,409.84

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Solution

The fourth proportional to 238,370.50, 357,479.82 and 78,409.84 is: 117,589.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,370.50 : 357,479.82 = 78,409.84 : x
  2. Step 2: Convert to fraction form
    238,370.50/357,479.82 = 78,409.84/x
  3. Step 3: Cross multiply
    238,370.50x = 357,479.82 × 78,409.84
  4. Step 4: Simplify right side
    238,370.50x = 28,029,935,489.43
  5. Step 5: Solve for x
    x = 28,029,935,489.43/238,370.50
  6. Step 6: Final answer
    x = 117,589.78

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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.