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Finding the Fourth Proportional to 402,635.00, 555,646.92 and 221,351.51

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Solution

The fourth proportional to 402,635.00, 555,646.92 and 221,351.51 is: 305,470.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,635.00 : 555,646.92 = 221,351.51 : x
  2. Step 2: Convert to fraction form
    402,635.00/555,646.92 = 221,351.51/x
  3. Step 3: Cross multiply
    402,635.00x = 555,646.92 × 221,351.51
  4. Step 4: Simplify right side
    402,635.00x = 122,993,281,990.62
  5. Step 5: Solve for x
    x = 122,993,281,990.62/402,635.00
  6. Step 6: Final answer
    x = 305,470.91

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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.