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Finding the Fourth Proportional to 400,612.34, 552,845.16 and 219,335.78

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Solution

The fourth proportional to 400,612.34, 552,845.16 and 219,335.78 is: 302,683.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,612.34 : 552,845.16 = 219,335.78 : x
  2. Step 2: Convert to fraction form
    400,612.34/552,845.16 = 219,335.78/x
  3. Step 3: Cross multiply
    400,612.34x = 552,845.16 × 219,335.78
  4. Step 4: Simplify right side
    400,612.34x = 121,258,725,769.94
  5. Step 5: Solve for x
    x = 121,258,725,769.94/400,612.34
  6. Step 6: Final answer
    x = 302,683.45

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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.