Home / 402,785.24-555,847.71-221,498.43

Finding the Fourth Proportional to 402,785.24, 555,847.71 and 221,498.43

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Solution

The fourth proportional to 402,785.24, 555,847.71 and 221,498.43 is: 305,670.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,785.24 : 555,847.71 = 221,498.43 : x
  2. Step 2: Convert to fraction form
    402,785.24/555,847.71 = 221,498.43/x
  3. Step 3: Cross multiply
    402,785.24x = 555,847.71 × 221,498.43
  4. Step 4: Simplify right side
    402,785.24x = 123,119,395,084.10
  5. Step 5: Solve for x
    x = 123,119,395,084.10/402,785.24
  6. Step 6: Final answer
    x = 305,670.08

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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.