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Finding the Fourth Proportional to 274,495.59, 378,805.80 and 153,648.06

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Solution

The fourth proportional to 274,495.59, 378,805.80 and 153,648.06 is: 212,035.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,495.59 : 378,805.80 = 153,648.06 : x
  2. Step 2: Convert to fraction form
    274,495.59/378,805.80 = 153,648.06/x
  3. Step 3: Cross multiply
    274,495.59x = 378,805.80 × 153,648.06
  4. Step 4: Simplify right side
    274,495.59x = 58,202,776,286.75
  5. Step 5: Solve for x
    x = 58,202,776,286.75/274,495.59
  6. Step 6: Final answer
    x = 212,035.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.