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Finding the Fourth Proportional to 346,642.56, 520,041.60 and 109,992.96

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Solution

The fourth proportional to 346,642.56, 520,041.60 and 109,992.96 is: 165,014.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,642.56 : 520,041.60 = 109,992.96 : x
  2. Step 2: Convert to fraction form
    346,642.56/520,041.60 = 109,992.96/x
  3. Step 3: Cross multiply
    346,642.56x = 520,041.60 × 109,992.96
  4. Step 4: Simplify right side
    346,642.56x = 57,200,914,907.14
  5. Step 5: Solve for x
    x = 57,200,914,907.14/346,642.56
  6. Step 6: Final answer
    x = 165,014.11

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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.