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Finding the Fourth Proportional to 265,559.84, 398,457.50 and 139,170.04

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Solution

The fourth proportional to 265,559.84, 398,457.50 and 139,170.04 is: 208,816.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,559.84 : 398,457.50 = 139,170.04 : x
  2. Step 2: Convert to fraction form
    265,559.84/398,457.50 = 139,170.04/x
  3. Step 3: Cross multiply
    265,559.84x = 398,457.50 × 139,170.04
  4. Step 4: Simplify right side
    265,559.84x = 55,453,346,213.30
  5. Step 5: Solve for x
    x = 55,453,346,213.30/265,559.84
  6. Step 6: Final answer
    x = 208,816.76

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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.