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Finding the Fourth Proportional to 245,636.37, 368,518.95 and 77,149.89

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Solution

The fourth proportional to 245,636.37, 368,518.95 and 77,149.89 is: 115,745.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,636.37 : 368,518.95 = 77,149.89 : x
  2. Step 2: Convert to fraction form
    245,636.37/368,518.95 = 77,149.89/x
  3. Step 3: Cross multiply
    245,636.37x = 368,518.95 × 77,149.89
  4. Step 4: Simplify right side
    245,636.37x = 28,431,196,455.42
  5. Step 5: Solve for x
    x = 28,431,196,455.42/245,636.37
  6. Step 6: Final answer
    x = 115,745.06

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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.