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Finding the Fourth Proportional to 265,560.77, 398,458.92 and 139,170.98

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Solution

The fourth proportional to 265,560.77, 398,458.92 and 139,170.98 is: 208,818.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,560.77 : 398,458.92 = 139,170.98 : x
  2. Step 2: Convert to fraction form
    265,560.77/398,458.92 = 139,170.98/x
  3. Step 3: Cross multiply
    265,560.77x = 398,458.92 × 139,170.98
  4. Step 4: Simplify right side
    265,560.77x = 55,453,916,393.85
  5. Step 5: Solve for x
    x = 55,453,916,393.85/265,560.77
  6. Step 6: Final answer
    x = 208,818.18

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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.