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Finding the Fourth Proportional to 255,217.50, 352,220.49 and 147,789.42

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Solution

The fourth proportional to 255,217.50, 352,220.49 and 147,789.42 is: 203,961.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,217.50 : 352,220.49 = 147,789.42 : x
  2. Step 2: Convert to fraction form
    255,217.50/352,220.49 = 147,789.42/x
  3. Step 3: Cross multiply
    255,217.50x = 352,220.49 × 147,789.42
  4. Step 4: Simplify right side
    255,217.50x = 52,054,461,929.22
  5. Step 5: Solve for x
    x = 52,054,461,929.22/255,217.50
  6. Step 6: Final answer
    x = 203,961.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.