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Finding the Fourth Proportional to 351,840.38, 485,536.95 and 190,691.28

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Solution

The fourth proportional to 351,840.38, 485,536.95 and 190,691.28 is: 263,152.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,840.38 : 485,536.95 = 190,691.28 : x
  2. Step 2: Convert to fraction form
    351,840.38/485,536.95 = 190,691.28/x
  3. Step 3: Cross multiply
    351,840.38x = 485,536.95 × 190,691.28
  4. Step 4: Simplify right side
    351,840.38x = 92,587,662,482.80
  5. Step 5: Solve for x
    x = 92,587,662,482.80/351,840.38
  6. Step 6: Final answer
    x = 263,152.47

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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.