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Finding the Fourth Proportional to 385,396.29, 577,950.66 and 132,605.28

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Solution

The fourth proportional to 385,396.29, 577,950.66 and 132,605.28 is: 198,858.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,396.29 : 577,950.66 = 132,605.28 : x
  2. Step 2: Convert to fraction form
    385,396.29/577,950.66 = 132,605.28/x
  3. Step 3: Cross multiply
    385,396.29x = 577,950.66 × 132,605.28
  4. Step 4: Simplify right side
    385,396.29x = 76,639,309,095.48
  5. Step 5: Solve for x
    x = 76,639,309,095.48/385,396.29
  6. Step 6: Final answer
    x = 198,858.45

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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.