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Finding the Fourth Proportional to 228,113.70, 342,138.15 and 70,358.10

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Solution

The fourth proportional to 228,113.70, 342,138.15 and 70,358.10 is: 105,527.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,113.70 : 342,138.15 = 70,358.10 : x
  2. Step 2: Convert to fraction form
    228,113.70/342,138.15 = 70,358.10/x
  3. Step 3: Cross multiply
    228,113.70x = 342,138.15 × 70,358.10
  4. Step 4: Simplify right side
    228,113.70x = 24,072,190,171.52
  5. Step 5: Solve for x
    x = 24,072,190,171.52/228,113.70
  6. Step 6: Final answer
    x = 105,527.16

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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.