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Finding the Fourth Proportional to 289,594.33, 399,403.15 and 203,837.18

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Solution

The fourth proportional to 289,594.33, 399,403.15 and 203,837.18 is: 281,128.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,594.33 : 399,403.15 = 203,837.18 : x
  2. Step 2: Convert to fraction form
    289,594.33/399,403.15 = 203,837.18/x
  3. Step 3: Cross multiply
    289,594.33x = 399,403.15 × 203,837.18
  4. Step 4: Simplify right side
    289,594.33x = 81,413,209,272.51
  5. Step 5: Solve for x
    x = 81,413,209,272.51/289,594.33
  6. Step 6: Final answer
    x = 281,128.47

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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.