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Finding the Fourth Proportional to 386,131.74, 579,223.53 and 105,651.42

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Solution

The fourth proportional to 386,131.74, 579,223.53 and 105,651.42 is: 158,484.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,131.74 : 579,223.53 = 105,651.42 : x
  2. Step 2: Convert to fraction form
    386,131.74/579,223.53 = 105,651.42/x
  3. Step 3: Cross multiply
    386,131.74x = 579,223.53 × 105,651.42
  4. Step 4: Simplify right side
    386,131.74x = 61,195,788,441.91
  5. Step 5: Solve for x
    x = 61,195,788,441.91/386,131.74
  6. Step 6: Final answer
    x = 158,484.22

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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.