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Finding the Fourth Proportional to 346,700.90, 520,051.35 and 169,321.70

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Solution

The fourth proportional to 346,700.90, 520,051.35 and 169,321.70 is: 253,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,700.90 : 520,051.35 = 169,321.70 : x
  2. Step 2: Convert to fraction form
    346,700.90/520,051.35 = 169,321.70/x
  3. Step 3: Cross multiply
    346,700.90x = 520,051.35 × 169,321.70
  4. Step 4: Simplify right side
    346,700.90x = 88,055,978,669.30
  5. Step 5: Solve for x
    x = 88,055,978,669.30/346,700.90
  6. Step 6: Final answer
    x = 253,982.55

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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.