Home / 345,935.10-518,902.65-212,382.30

Finding the Fourth Proportional to 345,935.10, 518,902.65 and 212,382.30

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Solution

The fourth proportional to 345,935.10, 518,902.65 and 212,382.30 is: 318,573.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,935.10 : 518,902.65 = 212,382.30 : x
  2. Step 2: Convert to fraction form
    345,935.10/518,902.65 = 212,382.30/x
  3. Step 3: Cross multiply
    345,935.10x = 518,902.65 × 212,382.30
  4. Step 4: Simplify right side
    345,935.10x = 110,205,738,283.10
  5. Step 5: Solve for x
    x = 110,205,738,283.10/345,935.10
  6. Step 6: Final answer
    x = 318,573.45

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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.