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Finding the Fourth Proportional to 454,655.63, 682,010.78 and 139,115.27

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Solution

The fourth proportional to 454,655.63, 682,010.78 and 139,115.27 is: 208,681.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,655.63 : 682,010.78 = 139,115.27 : x
  2. Step 2: Convert to fraction form
    454,655.63/682,010.78 = 139,115.27/x
  3. Step 3: Cross multiply
    454,655.63x = 682,010.78 × 139,115.27
  4. Step 4: Simplify right side
    454,655.63x = 94,878,109,696.98
  5. Step 5: Solve for x
    x = 94,878,109,696.98/454,655.63
  6. Step 6: Final answer
    x = 208,681.26

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Why These Related Problems?

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