Home / 402,376.36-555,276.72-221,090.26

Finding the Fourth Proportional to 402,376.36, 555,276.72 and 221,090.26

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Solution

The fourth proportional to 402,376.36, 555,276.72 and 221,090.26 is: 305,103.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,376.36 : 555,276.72 = 221,090.26 : x
  2. Step 2: Convert to fraction form
    402,376.36/555,276.72 = 221,090.26/x
  3. Step 3: Cross multiply
    402,376.36x = 555,276.72 × 221,090.26
  4. Step 4: Simplify right side
    402,376.36x = 122,766,274,396.75
  5. Step 5: Solve for x
    x = 122,766,274,396.75/402,376.36
  6. Step 6: Final answer
    x = 305,103.10

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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.