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Finding the Fourth Proportional to 201,479.56, 278,030.86 and 110,820.90

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Solution

The fourth proportional to 201,479.56, 278,030.86 and 110,820.90 is: 152,926.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,479.56 : 278,030.86 = 110,820.90 : x
  2. Step 2: Convert to fraction form
    201,479.56/278,030.86 = 110,820.90/x
  3. Step 3: Cross multiply
    201,479.56x = 278,030.86 × 110,820.90
  4. Step 4: Simplify right side
    201,479.56x = 30,811,630,132.97
  5. Step 5: Solve for x
    x = 30,811,630,132.97/201,479.56
  6. Step 6: Final answer
    x = 152,926.83

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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.