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Finding the Fourth Proportional to 343,397.42, 515,169.83 and 115,715.53

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Solution

The fourth proportional to 343,397.42, 515,169.83 and 115,715.53 is: 173,598.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,397.42 : 515,169.83 = 115,715.53 : x
  2. Step 2: Convert to fraction form
    343,397.42/515,169.83 = 115,715.53/x
  3. Step 3: Cross multiply
    343,397.42x = 515,169.83 × 115,715.53
  4. Step 4: Simplify right side
    343,397.42x = 59,613,148,919.82
  5. Step 5: Solve for x
    x = 59,613,148,919.82/343,397.42
  6. Step 6: Final answer
    x = 173,598.13

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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.