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Finding the Fourth Proportional to 399,335.31, 551,002.44 and 254,199.51

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Solution

The fourth proportional to 399,335.31, 551,002.44 and 254,199.51 is: 350,744.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,335.31 : 551,002.44 = 254,199.51 : x
  2. Step 2: Convert to fraction form
    399,335.31/551,002.44 = 254,199.51/x
  3. Step 3: Cross multiply
    399,335.31x = 551,002.44 × 254,199.51
  4. Step 4: Simplify right side
    399,335.31x = 140,064,550,256.80
  5. Step 5: Solve for x
    x = 140,064,550,256.80/399,335.31
  6. Step 6: Final answer
    x = 350,744.22

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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.