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Finding the Fourth Proportional to 245,660.71, 368,495.61 and 77,177.87

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Solution

The fourth proportional to 245,660.71, 368,495.61 and 77,177.87 is: 115,768.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,660.71 : 368,495.61 = 77,177.87 : x
  2. Step 2: Convert to fraction form
    245,660.71/368,495.61 = 77,177.87/x
  3. Step 3: Cross multiply
    245,660.71x = 368,495.61 × 77,177.87
  4. Step 4: Simplify right side
    245,660.71x = 28,439,706,284.15
  5. Step 5: Solve for x
    x = 28,439,706,284.15/245,660.71
  6. Step 6: Final answer
    x = 115,768.24

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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.