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Finding the Fourth Proportional to 315,335.80, 473,003.70 and 203,361.40

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Solution

The fourth proportional to 315,335.80, 473,003.70 and 203,361.40 is: 305,042.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,335.80 : 473,003.70 = 203,361.40 : x
  2. Step 2: Convert to fraction form
    315,335.80/473,003.70 = 203,361.40/x
  3. Step 3: Cross multiply
    315,335.80x = 473,003.70 × 203,361.40
  4. Step 4: Simplify right side
    315,335.80x = 96,190,694,637.18
  5. Step 5: Solve for x
    x = 96,190,694,637.18/315,335.80
  6. Step 6: Final answer
    x = 305,042.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.