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Finding the Fourth Proportional to 399,587.77, 551,441.95 and 238,536.29

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Solution

The fourth proportional to 399,587.77, 551,441.95 and 238,536.29 is: 329,186.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,587.77 : 551,441.95 = 238,536.29 : x
  2. Step 2: Convert to fraction form
    399,587.77/551,441.95 = 238,536.29/x
  3. Step 3: Cross multiply
    399,587.77x = 551,441.95 × 238,536.29
  4. Step 4: Simplify right side
    399,587.77x = 131,538,917,685.63
  5. Step 5: Solve for x
    x = 131,538,917,685.63/399,587.77
  6. Step 6: Final answer
    x = 329,186.54

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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.