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Finding the Fourth Proportional to 298,689.30, 412,247.61 and 171,448.02

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Solution

The fourth proportional to 298,689.30, 412,247.61 and 171,448.02 is: 236,630.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,689.30 : 412,247.61 = 171,448.02 : x
  2. Step 2: Convert to fraction form
    298,689.30/412,247.61 = 171,448.02/x
  3. Step 3: Cross multiply
    298,689.30x = 412,247.61 × 171,448.02
  4. Step 4: Simplify right side
    298,689.30x = 70,679,036,484.23
  5. Step 5: Solve for x
    x = 70,679,036,484.23/298,689.30
  6. Step 6: Final answer
    x = 236,630.63

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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.