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Finding the Fourth Proportional to 270,987.83, 374,015.54 and 156,340.53

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Solution

The fourth proportional to 270,987.83, 374,015.54 and 156,340.53 is: 215,780.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,987.83 : 374,015.54 = 156,340.53 : x
  2. Step 2: Convert to fraction form
    270,987.83/374,015.54 = 156,340.53/x
  3. Step 3: Cross multiply
    270,987.83x = 374,015.54 × 156,340.53
  4. Step 4: Simplify right side
    270,987.83x = 58,473,788,142.69
  5. Step 5: Solve for x
    x = 58,473,788,142.69/270,987.83
  6. Step 6: Final answer
    x = 215,780.13

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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.