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Finding the Fourth Proportional to 343,381.32, 515,145.82 and 115,699.56

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Solution

The fourth proportional to 343,381.32, 515,145.82 and 115,699.56 is: 173,574.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,381.32 : 515,145.82 = 115,699.56 : x
  2. Step 2: Convert to fraction form
    343,381.32/515,145.82 = 115,699.56/x
  3. Step 3: Cross multiply
    343,381.32x = 515,145.82 × 115,699.56
  4. Step 4: Simplify right side
    343,381.32x = 59,602,144,709.84
  5. Step 5: Solve for x
    x = 59,602,144,709.84/343,381.32
  6. Step 6: Final answer
    x = 173,574.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.