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Finding the Fourth Proportional to 245,747.87, 368,671.02 and 77,310.59

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Solution

The fourth proportional to 245,747.87, 368,671.02 and 77,310.59 is: 115,981.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,747.87 : 368,671.02 = 77,310.59 : x
  2. Step 2: Convert to fraction form
    245,747.87/368,671.02 = 77,310.59/x
  3. Step 3: Cross multiply
    245,747.87x = 368,671.02 × 77,310.59
  4. Step 4: Simplify right side
    245,747.87x = 28,502,174,072.10
  5. Step 5: Solve for x
    x = 28,502,174,072.10/245,747.87
  6. Step 6: Final answer
    x = 115,981.37

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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.