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Finding the Fourth Proportional to 315,062.46, 434,781.60 and 171,822.18

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Solution

The fourth proportional to 315,062.46, 434,781.60 and 171,822.18 is: 237,112.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,062.46 : 434,781.60 = 171,822.18 : x
  2. Step 2: Convert to fraction form
    315,062.46/434,781.60 = 171,822.18/x
  3. Step 3: Cross multiply
    315,062.46x = 434,781.60 × 171,822.18
  4. Step 4: Simplify right side
    315,062.46x = 74,705,122,335.89
  5. Step 5: Solve for x
    x = 74,705,122,335.89/315,062.46
  6. Step 6: Final answer
    x = 237,112.10

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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.