Home / 393,334.19-542,795.72-221,239.16

Finding the Fourth Proportional to 393,334.19, 542,795.72 and 221,239.16

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Solution

The fourth proportional to 393,334.19, 542,795.72 and 221,239.16 is: 305,306.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,334.19 : 542,795.72 = 221,239.16 : x
  2. Step 2: Convert to fraction form
    393,334.19/542,795.72 = 221,239.16/x
  3. Step 3: Cross multiply
    393,334.19x = 542,795.72 × 221,239.16
  4. Step 4: Simplify right side
    393,334.19x = 120,087,671,054.48
  5. Step 5: Solve for x
    x = 120,087,671,054.48/393,334.19
  6. Step 6: Final answer
    x = 305,306.97

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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.