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Finding the Fourth Proportional to 238,953.21, 358,344.44 and 78,999.62

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Solution

The fourth proportional to 238,953.21, 358,344.44 and 78,999.62 is: 118,471.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,953.21 : 358,344.44 = 78,999.62 : x
  2. Step 2: Convert to fraction form
    238,953.21/358,344.44 = 78,999.62/x
  3. Step 3: Cross multiply
    238,953.21x = 358,344.44 × 78,999.62
  4. Step 4: Simplify right side
    238,953.21x = 28,309,074,589.11
  5. Step 5: Solve for x
    x = 28,309,074,589.11/238,953.21
  6. Step 6: Final answer
    x = 118,471.20

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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.