Home / 382,806.13-528,272.67-221,669.74

Finding the Fourth Proportional to 382,806.13, 528,272.67 and 221,669.74

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Solution

The fourth proportional to 382,806.13, 528,272.67 and 221,669.74 is: 305,904.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,806.13 : 528,272.67 = 221,669.74 : x
  2. Step 2: Convert to fraction form
    382,806.13/528,272.67 = 221,669.74/x
  3. Step 3: Cross multiply
    382,806.13x = 528,272.67 × 221,669.74
  4. Step 4: Simplify right side
    382,806.13x = 117,102,065,408.01
  5. Step 5: Solve for x
    x = 117,102,065,408.01/382,806.13
  6. Step 6: Final answer
    x = 305,904.36

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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.