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Finding the Fourth Proportional to 228,472.25, 315,326.52 and 142,445.18

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Solution

The fourth proportional to 228,472.25, 315,326.52 and 142,445.18 is: 196,596.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,472.25 : 315,326.52 = 142,445.18 : x
  2. Step 2: Convert to fraction form
    228,472.25/315,326.52 = 142,445.18/x
  3. Step 3: Cross multiply
    228,472.25x = 315,326.52 × 142,445.18
  4. Step 4: Simplify right side
    228,472.25x = 44,916,743,688.49
  5. Step 5: Solve for x
    x = 44,916,743,688.49/228,472.25
  6. Step 6: Final answer
    x = 196,596.06

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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.