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Finding the Fourth Proportional to 346,709.80, 520,064.70 and 178,748.20

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Solution

The fourth proportional to 346,709.80, 520,064.70 and 178,748.20 is: 268,122.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,709.80 : 520,064.70 = 178,748.20 : x
  2. Step 2: Convert to fraction form
    346,709.80/520,064.70 = 178,748.20/x
  3. Step 3: Cross multiply
    346,709.80x = 520,064.70 × 178,748.20
  4. Step 4: Simplify right side
    346,709.80x = 92,960,629,008.54
  5. Step 5: Solve for x
    x = 92,960,629,008.54/346,709.80
  6. Step 6: Final answer
    x = 268,122.30

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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.