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Finding the Fourth Proportional to 346,291.20, 519,485.40 and 109,609.20

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Solution

The fourth proportional to 346,291.20, 519,485.40 and 109,609.20 is: 164,429.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,291.20 : 519,485.40 = 109,609.20 : x
  2. Step 2: Convert to fraction form
    346,291.20/519,485.40 = 109,609.20/x
  3. Step 3: Cross multiply
    346,291.20x = 519,485.40 × 109,609.20
  4. Step 4: Simplify right side
    346,291.20x = 56,940,379,105.68
  5. Step 5: Solve for x
    x = 56,940,379,105.68/346,291.20
  6. Step 6: Final answer
    x = 164,429.18

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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.