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Finding the Fourth Proportional to 195,429.20, 293,143.80 and 145,662.80

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Solution

The fourth proportional to 195,429.20, 293,143.80 and 145,662.80 is: 218,494.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,429.20 : 293,143.80 = 145,662.80 : x
  2. Step 2: Convert to fraction form
    195,429.20/293,143.80 = 145,662.80/x
  3. Step 3: Cross multiply
    195,429.20x = 293,143.80 × 145,662.80
  4. Step 4: Simplify right side
    195,429.20x = 42,700,146,710.64
  5. Step 5: Solve for x
    x = 42,700,146,710.64/195,429.20
  6. Step 6: Final answer
    x = 218,494.20

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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.