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Finding the Fourth Proportional to 245,674.68, 368,516.64 and 77,191.92

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Solution

The fourth proportional to 245,674.68, 368,516.64 and 77,191.92 is: 115,789.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,674.68 : 368,516.64 = 77,191.92 : x
  2. Step 2: Convert to fraction form
    245,674.68/368,516.64 = 77,191.92/x
  3. Step 3: Cross multiply
    245,674.68x = 368,516.64 × 77,191.92
  4. Step 4: Simplify right side
    245,674.68x = 28,446,506,993.55
  5. Step 5: Solve for x
    x = 28,446,506,993.55/245,674.68
  6. Step 6: Final answer
    x = 115,789.33

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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.