Home / 402,723.71-555,760.79-221,447.33

Finding the Fourth Proportional to 402,723.71, 555,760.79 and 221,447.33

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Solution

The fourth proportional to 402,723.71, 555,760.79 and 221,447.33 is: 305,598.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,723.71 : 555,760.79 = 221,447.33 : x
  2. Step 2: Convert to fraction form
    402,723.71/555,760.79 = 221,447.33/x
  3. Step 3: Cross multiply
    402,723.71x = 555,760.79 × 221,447.33
  4. Step 4: Simplify right side
    402,723.71x = 123,071,746,464.48
  5. Step 5: Solve for x
    x = 123,071,746,464.48/402,723.71
  6. Step 6: Final answer
    x = 305,598.46

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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.