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Finding the Fourth Proportional to 388,922.34, 536,712.83 and 219,162.54

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Solution

The fourth proportional to 388,922.34, 536,712.83 and 219,162.54 is: 302,444.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,922.34 : 536,712.83 = 219,162.54 : x
  2. Step 2: Convert to fraction form
    388,922.34/536,712.83 = 219,162.54/x
  3. Step 3: Cross multiply
    388,922.34x = 536,712.83 × 219,162.54
  4. Step 4: Simplify right side
    388,922.34x = 117,627,350,044.90
  5. Step 5: Solve for x
    x = 117,627,350,044.90/388,922.34
  6. Step 6: Final answer
    x = 302,444.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.