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Finding the Fourth Proportional to 274,164.93, 378,345.47 and 153,306.45

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Solution

The fourth proportional to 274,164.93, 378,345.47 and 153,306.45 is: 211,561.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,164.93 : 378,345.47 = 153,306.45 : x
  2. Step 2: Convert to fraction form
    274,164.93/378,345.47 = 153,306.45/x
  3. Step 3: Cross multiply
    274,164.93x = 378,345.47 × 153,306.45
  4. Step 4: Simplify right side
    274,164.93x = 58,002,800,112.75
  5. Step 5: Solve for x
    x = 58,002,800,112.75/274,164.93
  6. Step 6: Final answer
    x = 211,561.71

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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.