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Finding the Fourth Proportional to 228,624.91, 315,656.42 and 142,714.69

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Solution

The fourth proportional to 228,624.91, 315,656.42 and 142,714.69 is: 197,042.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,624.91 : 315,656.42 = 142,714.69 : x
  2. Step 2: Convert to fraction form
    228,624.91/315,656.42 = 142,714.69/x
  3. Step 3: Cross multiply
    228,624.91x = 315,656.42 × 142,714.69
  4. Step 4: Simplify right side
    228,624.91x = 45,048,808,126.81
  5. Step 5: Solve for x
    x = 45,048,808,126.81/228,624.91
  6. Step 6: Final answer
    x = 197,042.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.