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Finding the Fourth Proportional to 221,799.21, 306,218.42 and 144,348.63

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Solution

The fourth proportional to 221,799.21, 306,218.42 and 144,348.63 is: 199,289.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,799.21 : 306,218.42 = 144,348.63 : x
  2. Step 2: Convert to fraction form
    221,799.21/306,218.42 = 144,348.63/x
  3. Step 3: Cross multiply
    221,799.21x = 306,218.42 × 144,348.63
  4. Step 4: Simplify right side
    221,799.21x = 44,202,208,686.02
  5. Step 5: Solve for x
    x = 44,202,208,686.02/221,799.21
  6. Step 6: Final answer
    x = 199,289.30

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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.