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Finding the Fourth Proportional to 250,945.86, 346,305.87 and 137,775.90

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Solution

The fourth proportional to 250,945.86, 346,305.87 and 137,775.90 is: 190,131.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,945.86 : 346,305.87 = 137,775.90 : x
  2. Step 2: Convert to fraction form
    250,945.86/346,305.87 = 137,775.90/x
  3. Step 3: Cross multiply
    250,945.86x = 346,305.87 × 137,775.90
  4. Step 4: Simplify right side
    250,945.86x = 47,712,602,914.53
  5. Step 5: Solve for x
    x = 47,712,602,914.53/250,945.86
  6. Step 6: Final answer
    x = 190,131.06

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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.