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Finding the Fourth Proportional to 238,861.98, 358,216.92 and 78,908.22

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Solution

The fourth proportional to 238,861.98, 358,216.92 and 78,908.22 is: 118,337.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,861.98 : 358,216.92 = 78,908.22 : x
  2. Step 2: Convert to fraction form
    238,861.98/358,216.92 = 78,908.22/x
  3. Step 3: Cross multiply
    238,861.98x = 358,216.92 × 78,908.22
  4. Step 4: Simplify right side
    238,861.98x = 28,266,259,531.08
  5. Step 5: Solve for x
    x = 28,266,259,531.08/238,861.98
  6. Step 6: Final answer
    x = 118,337.21

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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.