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Finding the Fourth Proportional to 221,807.79, 332,739.30 and 86,854.44

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Solution

The fourth proportional to 221,807.79, 332,739.30 and 86,854.44 is: 130,292.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,807.79 : 332,739.30 = 86,854.44 : x
  2. Step 2: Convert to fraction form
    221,807.79/332,739.30 = 86,854.44/x
  3. Step 3: Cross multiply
    221,807.79x = 332,739.30 × 86,854.44
  4. Step 4: Simplify right side
    221,807.79x = 28,899,885,567.49
  5. Step 5: Solve for x
    x = 28,899,885,567.49/221,807.79
  6. Step 6: Final answer
    x = 130,292.47

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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.