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Finding the Fourth Proportional to 346,780.80, 520,171.20 and 169,633.80

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Solution

The fourth proportional to 346,780.80, 520,171.20 and 169,633.80 is: 254,450.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,780.80 : 520,171.20 = 169,633.80 : x
  2. Step 2: Convert to fraction form
    346,780.80/520,171.20 = 169,633.80/x
  3. Step 3: Cross multiply
    346,780.80x = 520,171.20 × 169,633.80
  4. Step 4: Simplify right side
    346,780.80x = 88,238,617,306.56
  5. Step 5: Solve for x
    x = 88,238,617,306.56/346,780.80
  6. Step 6: Final answer
    x = 254,450.70

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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.