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Finding the Fourth Proportional to 245,435.06, 368,061.43 and 85,469.92

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Solution

The fourth proportional to 245,435.06, 368,061.43 and 85,469.92 is: 128,173.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,435.06 : 368,061.43 = 85,469.92 : x
  2. Step 2: Convert to fraction form
    245,435.06/368,061.43 = 85,469.92/x
  3. Step 3: Cross multiply
    245,435.06x = 368,061.43 × 85,469.92
  4. Step 4: Simplify right side
    245,435.06x = 31,458,180,977.19
  5. Step 5: Solve for x
    x = 31,458,180,977.19/245,435.06
  6. Step 6: Final answer
    x = 128,173.13

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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.