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Finding the Fourth Proportional to 402,248.99, 555,107.18 and 220,964.60

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Solution

The fourth proportional to 402,248.99, 555,107.18 and 220,964.60 is: 304,933.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,248.99 : 555,107.18 = 220,964.60 : x
  2. Step 2: Convert to fraction form
    402,248.99/555,107.18 = 220,964.60/x
  3. Step 3: Cross multiply
    402,248.99x = 555,107.18 × 220,964.60
  4. Step 4: Simplify right side
    402,248.99x = 122,659,032,105.47
  5. Step 5: Solve for x
    x = 122,659,032,105.47/402,248.99
  6. Step 6: Final answer
    x = 304,933.11

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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.