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Finding the Fourth Proportional to 217,437.40, 325,896.90 and 91,077.40

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Solution

The fourth proportional to 217,437.40, 325,896.90 and 91,077.40 is: 136,507.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,437.40 : 325,896.90 = 91,077.40 : x
  2. Step 2: Convert to fraction form
    217,437.40/325,896.90 = 91,077.40/x
  3. Step 3: Cross multiply
    217,437.40x = 325,896.90 × 91,077.40
  4. Step 4: Simplify right side
    217,437.40x = 29,681,842,320.06
  5. Step 5: Solve for x
    x = 29,681,842,320.06/217,437.40
  6. Step 6: Final answer
    x = 136,507.53

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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.