Home / 402,724.44-555,774-221,450.16

Finding the Fourth Proportional to 402,724.44, 555,774 and 221,450.16

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Solution

The fourth proportional to 402,724.44, 555,774 and 221,450.16 is: 305,609.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,724.44 : 555,774 = 221,450.16 : x
  2. Step 2: Convert to fraction form
    402,724.44/555,774 = 221,450.16/x
  3. Step 3: Cross multiply
    402,724.44x = 555,774 × 221,450.16
  4. Step 4: Simplify right side
    402,724.44x = 123,076,241,223.84
  5. Step 5: Solve for x
    x = 123,076,241,223.84/402,724.44
  6. Step 6: Final answer
    x = 305,609.07

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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.