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Finding the Fourth Proportional to 239,941, 331,118.58 and 139,345.48

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Solution

The fourth proportional to 239,941, 331,118.58 and 139,345.48 is: 192,296.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,941 : 331,118.58 = 139,345.48 : x
  2. Step 2: Convert to fraction form
    239,941/331,118.58 = 139,345.48/x
  3. Step 3: Cross multiply
    239,941x = 331,118.58 × 139,345.48
  4. Step 4: Simplify right side
    239,941x = 46,139,877,467.02
  5. Step 5: Solve for x
    x = 46,139,877,467.02/239,941
  6. Step 6: Final answer
    x = 192,296.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.