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Finding the Fourth Proportional to 278,837.68, 384,897.54 and 171,551.56

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Solution

The fourth proportional to 278,837.68, 384,897.54 and 171,551.56 is: 236,803.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,837.68 : 384,897.54 = 171,551.56 : x
  2. Step 2: Convert to fraction form
    278,837.68/384,897.54 = 171,551.56/x
  3. Step 3: Cross multiply
    278,837.68x = 384,897.54 × 171,551.56
  4. Step 4: Simplify right side
    278,837.68x = 66,029,773,427.16
  5. Step 5: Solve for x
    x = 66,029,773,427.16/278,837.68
  6. Step 6: Final answer
    x = 236,803.63

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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.