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Finding the Fourth Proportional to 228,613.16, 315,640.19 and 142,702.94

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Solution

The fourth proportional to 228,613.16, 315,640.19 and 142,702.94 is: 197,026.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,613.16 : 315,640.19 = 142,702.94 : x
  2. Step 2: Convert to fraction form
    228,613.16/315,640.19 = 142,702.94/x
  3. Step 3: Cross multiply
    228,613.16x = 315,640.19 × 142,702.94
  4. Step 4: Simplify right side
    228,613.16x = 45,042,780,803.44
  5. Step 5: Solve for x
    x = 45,042,780,803.44/228,613.16
  6. Step 6: Final answer
    x = 197,026.20

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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.