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Finding the Fourth Proportional to 265,558.84, 398,456 and 139,169.04

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Solution

The fourth proportional to 265,558.84, 398,456 and 139,169.04 is: 208,815.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,558.84 : 398,456 = 139,169.04 : x
  2. Step 2: Convert to fraction form
    265,558.84/398,456 = 139,169.04/x
  3. Step 3: Cross multiply
    265,558.84x = 398,456 × 139,169.04
  4. Step 4: Simplify right side
    265,558.84x = 55,452,739,002.24
  5. Step 5: Solve for x
    x = 55,452,739,002.24/265,558.84
  6. Step 6: Final answer
    x = 208,815.26

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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.