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Finding the Fourth Proportional to 453,985.56, 680,976.54 and 138,441.56

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Solution

The fourth proportional to 453,985.56, 680,976.54 and 138,441.56 is: 207,661.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,985.56 : 680,976.54 = 138,441.56 : x
  2. Step 2: Convert to fraction form
    453,985.56/680,976.54 = 138,441.56/x
  3. Step 3: Cross multiply
    453,985.56x = 680,976.54 × 138,441.56
  4. Step 4: Simplify right side
    453,985.56x = 94,275,454,521.00
  5. Step 5: Solve for x
    x = 94,275,454,521.00/453,985.56
  6. Step 6: Final answer
    x = 207,661.79

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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.