Home / 345,475.82-518,115.30-218,925.08

Finding the Fourth Proportional to 345,475.82, 518,115.30 and 218,925.08

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Solution

The fourth proportional to 345,475.82, 518,115.30 and 218,925.08 is: 328,325.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,475.82 : 518,115.30 = 218,925.08 : x
  2. Step 2: Convert to fraction form
    345,475.82/518,115.30 = 218,925.08/x
  3. Step 3: Cross multiply
    345,475.82x = 518,115.30 × 218,925.08
  4. Step 4: Simplify right side
    345,475.82x = 113,428,433,501.72
  5. Step 5: Solve for x
    x = 113,428,433,501.72/345,475.82
  6. Step 6: Final answer
    x = 328,325.25

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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.