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Finding the Fourth Proportional to 399,588.53, 551,442.98 and 238,537.04

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Solution

The fourth proportional to 399,588.53, 551,442.98 and 238,537.04 is: 329,187.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,588.53 : 551,442.98 = 238,537.04 : x
  2. Step 2: Convert to fraction form
    399,588.53/551,442.98 = 238,537.04/x
  3. Step 3: Cross multiply
    399,588.53x = 551,442.98 × 238,537.04
  4. Step 4: Simplify right side
    399,588.53x = 131,539,578,152.93
  5. Step 5: Solve for x
    x = 131,539,578,152.93/399,588.53
  6. Step 6: Final answer
    x = 329,187.58

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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.