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Finding the Fourth Proportional to 386,601, 579,309.53 and 161,838.96

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Solution

The fourth proportional to 386,601, 579,309.53 and 161,838.96 is: 242,510.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,601 : 579,309.53 = 161,838.96 : x
  2. Step 2: Convert to fraction form
    386,601/579,309.53 = 161,838.96/x
  3. Step 3: Cross multiply
    386,601x = 579,309.53 × 161,838.96
  4. Step 4: Simplify right side
    386,601x = 93,754,851,044.09
  5. Step 5: Solve for x
    x = 93,754,851,044.09/386,601
  6. Step 6: Final answer
    x = 242,510.63

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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.