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Finding the Fourth Proportional to 620,891.22, 931,342.59 and 247,009.62

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Solution

The fourth proportional to 620,891.22, 931,342.59 and 247,009.62 is: 370,516.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,891.22 : 931,342.59 = 247,009.62 : x
  2. Step 2: Convert to fraction form
    620,891.22/931,342.59 = 247,009.62/x
  3. Step 3: Cross multiply
    620,891.22x = 931,342.59 × 247,009.62
  4. Step 4: Simplify right side
    620,891.22x = 230,050,579,245.72
  5. Step 5: Solve for x
    x = 230,050,579,245.72/620,891.22
  6. Step 6: Final answer
    x = 370,516.72

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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.