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Finding the Fourth Proportional to 274,496.59, 378,807.18 and 153,649.06

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Solution

The fourth proportional to 274,496.59, 378,807.18 and 153,649.06 is: 212,036.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,496.59 : 378,807.18 = 153,649.06 : x
  2. Step 2: Convert to fraction form
    274,496.59/378,807.18 = 153,649.06/x
  3. Step 3: Cross multiply
    274,496.59x = 378,807.18 × 153,649.06
  4. Step 4: Simplify right side
    274,496.59x = 58,203,367,128.25
  5. Step 5: Solve for x
    x = 58,203,367,128.25/274,496.59
  6. Step 6: Final answer
    x = 212,036.76

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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.