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Finding the Fourth Proportional to 312,677.58, 431,496.62 and 169,437.89

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Solution

The fourth proportional to 312,677.58, 431,496.62 and 169,437.89 is: 233,825.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,677.58 : 431,496.62 = 169,437.89 : x
  2. Step 2: Convert to fraction form
    312,677.58/431,496.62 = 169,437.89/x
  3. Step 3: Cross multiply
    312,677.58x = 431,496.62 × 169,437.89
  4. Step 4: Simplify right side
    312,677.58x = 73,111,876,834.93
  5. Step 5: Solve for x
    x = 73,111,876,834.93/312,677.58
  6. Step 6: Final answer
    x = 233,825.13

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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.