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Finding the Fourth Proportional to 368,398.86, 552,275.10 and 305,738.88

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Solution

The fourth proportional to 368,398.86, 552,275.10 and 305,738.88 is: 458,340.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,398.86 : 552,275.10 = 305,738.88 : x
  2. Step 2: Convert to fraction form
    368,398.86/552,275.10 = 305,738.88/x
  3. Step 3: Cross multiply
    368,398.86x = 552,275.10 × 305,738.88
  4. Step 4: Simplify right side
    368,398.86x = 168,851,970,525.89
  5. Step 5: Solve for x
    x = 168,851,970,525.89/368,398.86
  6. Step 6: Final answer
    x = 458,340.10

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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.