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Finding the Fourth Proportional to 343,074.84, 472,464.54 and 308,791.32

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Solution

The fourth proportional to 343,074.84, 472,464.54 and 308,791.32 is: 425,251.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,074.84 : 472,464.54 = 308,791.32 : x
  2. Step 2: Convert to fraction form
    343,074.84/472,464.54 = 308,791.32/x
  3. Step 3: Cross multiply
    343,074.84x = 472,464.54 × 308,791.32
  4. Step 4: Simplify right side
    343,074.84x = 145,892,948,959.79
  5. Step 5: Solve for x
    x = 145,892,948,959.79/343,074.84
  6. Step 6: Final answer
    x = 425,251.09

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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.