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Finding the Fourth Proportional to 191,608.80, 287,391.28 and 51,356.48

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Solution

The fourth proportional to 191,608.80, 287,391.28 and 51,356.48 is: 77,028.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,608.80 : 287,391.28 = 51,356.48 : x
  2. Step 2: Convert to fraction form
    191,608.80/287,391.28 = 51,356.48/x
  3. Step 3: Cross multiply
    191,608.80x = 287,391.28 × 51,356.48
  4. Step 4: Simplify right side
    191,608.80x = 14,759,404,523.49
  5. Step 5: Solve for x
    x = 14,759,404,523.49/191,608.80
  6. Step 6: Final answer
    x = 77,028.84

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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.