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Finding the Fourth Proportional to 278,032.68, 416,985.06 and 165,744.60

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Solution

The fourth proportional to 278,032.68, 416,985.06 and 165,744.60 is: 248,578.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,032.68 : 416,985.06 = 165,744.60 : x
  2. Step 2: Convert to fraction form
    278,032.68/416,985.06 = 165,744.60/x
  3. Step 3: Cross multiply
    278,032.68x = 416,985.06 × 165,744.60
  4. Step 4: Simplify right side
    278,032.68x = 69,113,021,975.68
  5. Step 5: Solve for x
    x = 69,113,021,975.68/278,032.68
  6. Step 6: Final answer
    x = 248,578.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.