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Finding the Fourth Proportional to 255,388.89, 352,267.80 and 159,729.51

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Solution

The fourth proportional to 255,388.89, 352,267.80 and 159,729.51 is: 220,321.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,388.89 : 352,267.80 = 159,729.51 : x
  2. Step 2: Convert to fraction form
    255,388.89/352,267.80 = 159,729.51/x
  3. Step 3: Cross multiply
    255,388.89x = 352,267.80 × 159,729.51
  4. Step 4: Simplify right side
    255,388.89x = 56,267,563,082.78
  5. Step 5: Solve for x
    x = 56,267,563,082.78/255,388.89
  6. Step 6: Final answer
    x = 220,321.11

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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.