Home / 438,116.16-604,321.92-287,222.88

Finding the Fourth Proportional to 438,116.16, 604,321.92 and 287,222.88

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Solution

The fourth proportional to 438,116.16, 604,321.92 and 287,222.88 is: 396,185.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,116.16 : 604,321.92 = 287,222.88 : x
  2. Step 2: Convert to fraction form
    438,116.16/604,321.92 = 287,222.88/x
  3. Step 3: Cross multiply
    438,116.16x = 604,321.92 × 287,222.88
  4. Step 4: Simplify right side
    438,116.16x = 173,575,082,309.53
  5. Step 5: Solve for x
    x = 173,575,082,309.53/438,116.16
  6. Step 6: Final answer
    x = 396,185.07

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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.