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Finding the Fourth Proportional to 228,019, 342,073.86 and 70,240.72

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Solution

The fourth proportional to 228,019, 342,073.86 and 70,240.72 is: 105,375.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,019 : 342,073.86 = 70,240.72 : x
  2. Step 2: Convert to fraction form
    228,019/342,073.86 = 70,240.72/x
  3. Step 3: Cross multiply
    228,019x = 342,073.86 × 70,240.72
  4. Step 4: Simplify right side
    228,019x = 24,027,514,219.58
  5. Step 5: Solve for x
    x = 24,027,514,219.58/228,019
  6. Step 6: Final answer
    x = 105,375.05

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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.