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Finding the Fourth Proportional to 261,252.25, 392,764.21 and 208,616.63

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Solution

The fourth proportional to 261,252.25, 392,764.21 and 208,616.63 is: 313,632.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,252.25 : 392,764.21 = 208,616.63 : x
  2. Step 2: Convert to fraction form
    261,252.25/392,764.21 = 208,616.63/x
  3. Step 3: Cross multiply
    261,252.25x = 392,764.21 × 208,616.63
  4. Step 4: Simplify right side
    261,252.25x = 81,937,143,389.45
  5. Step 5: Solve for x
    x = 81,937,143,389.45/261,252.25
  6. Step 6: Final answer
    x = 313,632.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.