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Finding the Fourth Proportional to 341,132.40, 511,698.60 and 91,814.40

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Solution

The fourth proportional to 341,132.40, 511,698.60 and 91,814.40 is: 137,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,132.40 : 511,698.60 = 91,814.40 : x
  2. Step 2: Convert to fraction form
    341,132.40/511,698.60 = 91,814.40/x
  3. Step 3: Cross multiply
    341,132.40x = 511,698.60 × 91,814.40
  4. Step 4: Simplify right side
    341,132.40x = 46,981,299,939.84
  5. Step 5: Solve for x
    x = 46,981,299,939.84/341,132.40
  6. Step 6: Final answer
    x = 137,721.60

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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.