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Finding the Fourth Proportional to 265,586.01, 398,496.60 and 139,196.13

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Solution

The fourth proportional to 265,586.01, 398,496.60 and 139,196.13 is: 208,855.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,586.01 : 398,496.60 = 139,196.13 : x
  2. Step 2: Convert to fraction form
    265,586.01/398,496.60 = 139,196.13/x
  3. Step 3: Cross multiply
    265,586.01x = 398,496.60 × 139,196.13
  4. Step 4: Simplify right side
    265,586.01x = 55,469,184,538.16
  5. Step 5: Solve for x
    x = 55,469,184,538.16/265,586.01
  6. Step 6: Final answer
    x = 208,855.82

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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.