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Finding the Fourth Proportional to 340,917.72, 511,376.31 and 91,599.72

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Solution

The fourth proportional to 340,917.72, 511,376.31 and 91,599.72 is: 137,399.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,917.72 : 511,376.31 = 91,599.72 : x
  2. Step 2: Convert to fraction form
    340,917.72/511,376.31 = 91,599.72/x
  3. Step 3: Cross multiply
    340,917.72x = 511,376.31 × 91,599.72
  4. Step 4: Simplify right side
    340,917.72x = 46,841,926,810.63
  5. Step 5: Solve for x
    x = 46,841,926,810.63/340,917.72
  6. Step 6: Final answer
    x = 137,399.51

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1.5x scale

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.