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Finding the Fourth Proportional to 220,629.79, 330,653.95 and 87,437.44

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Solution

The fourth proportional to 220,629.79, 330,653.95 and 87,437.44 is: 131,040.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,629.79 : 330,653.95 = 87,437.44 : x
  2. Step 2: Convert to fraction form
    220,629.79/330,653.95 = 87,437.44/x
  3. Step 3: Cross multiply
    220,629.79x = 330,653.95 × 87,437.44
  4. Step 4: Simplify right side
    220,629.79x = 28,911,535,108.61
  5. Step 5: Solve for x
    x = 28,911,535,108.61/220,629.79
  6. Step 6: Final answer
    x = 131,040.94

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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.