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Finding the Fourth Proportional to 395,655.79, 545,943.32 and 234,484.82

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Solution

The fourth proportional to 395,655.79, 545,943.32 and 234,484.82 is: 323,552.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,655.79 : 545,943.32 = 234,484.82 : x
  2. Step 2: Convert to fraction form
    395,655.79/545,943.32 = 234,484.82/x
  3. Step 3: Cross multiply
    395,655.79x = 545,943.32 × 234,484.82
  4. Step 4: Simplify right side
    395,655.79x = 128,015,422,556.31
  5. Step 5: Solve for x
    x = 128,015,422,556.31/395,655.79
  6. Step 6: Final answer
    x = 323,552.51

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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.