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Finding the Fourth Proportional to 255,904.13, 353,135.38 and 139,610.68

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Solution

The fourth proportional to 255,904.13, 353,135.38 and 139,610.68 is: 192,656.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,904.13 : 353,135.38 = 139,610.68 : x
  2. Step 2: Convert to fraction form
    255,904.13/353,135.38 = 139,610.68/x
  3. Step 3: Cross multiply
    255,904.13x = 353,135.38 × 139,610.68
  4. Step 4: Simplify right side
    255,904.13x = 49,301,468,478.18
  5. Step 5: Solve for x
    x = 49,301,468,478.18/255,904.13
  6. Step 6: Final answer
    x = 192,656.01

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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.