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Finding the Fourth Proportional to 346,658.80, 520,036.80 and 136,247.80

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Solution

The fourth proportional to 346,658.80, 520,036.80 and 136,247.80 is: 204,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,658.80 : 520,036.80 = 136,247.80 : x
  2. Step 2: Convert to fraction form
    346,658.80/520,036.80 = 136,247.80/x
  3. Step 3: Cross multiply
    346,658.80x = 520,036.80 × 136,247.80
  4. Step 4: Simplify right side
    346,658.80x = 70,853,869,919.04
  5. Step 5: Solve for x
    x = 70,853,869,919.04/346,658.80
  6. Step 6: Final answer
    x = 204,390.80

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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.