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Finding the Fourth Proportional to 307,710.18, 424,661.40 and 171,770.85

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Solution

The fourth proportional to 307,710.18, 424,661.40 and 171,770.85 is: 237,055.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,710.18 : 424,661.40 = 171,770.85 : x
  2. Step 2: Convert to fraction form
    307,710.18/424,661.40 = 171,770.85/x
  3. Step 3: Cross multiply
    307,710.18x = 424,661.40 × 171,770.85
  4. Step 4: Simplify right side
    307,710.18x = 72,944,449,640.19
  5. Step 5: Solve for x
    x = 72,944,449,640.19/307,710.18
  6. Step 6: Final answer
    x = 237,055.69

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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.