Home / 238,742.14-358,082.61-78,778.48

Finding the Fourth Proportional to 238,742.14, 358,082.61 and 78,778.48

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Solution

The fourth proportional to 238,742.14, 358,082.61 and 78,778.48 is: 118,157.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,742.14 : 358,082.61 = 78,778.48 : x
  2. Step 2: Convert to fraction form
    238,742.14/358,082.61 = 78,778.48/x
  3. Step 3: Cross multiply
    238,742.14x = 358,082.61 × 78,778.48
  4. Step 4: Simplify right side
    238,742.14x = 28,209,203,730.23
  5. Step 5: Solve for x
    x = 28,209,203,730.23/238,742.14
  6. Step 6: Final answer
    x = 118,157.62

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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.