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Finding the Fourth Proportional to 285,395.04, 393,848.03 and 172,195.92

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Solution

The fourth proportional to 285,395.04, 393,848.03 and 172,195.92 is: 237,632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,395.04 : 393,848.03 = 172,195.92 : x
  2. Step 2: Convert to fraction form
    285,395.04/393,848.03 = 172,195.92/x
  3. Step 3: Cross multiply
    285,395.04x = 393,848.03 × 172,195.92
  4. Step 4: Simplify right side
    285,395.04x = 67,819,023,866.04
  5. Step 5: Solve for x
    x = 67,819,023,866.04/285,395.04
  6. Step 6: Final answer
    x = 237,632.10

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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.