Home / 345,935.60-518,903.40-212,382.80

Finding the Fourth Proportional to 345,935.60, 518,903.40 and 212,382.80

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Solution

The fourth proportional to 345,935.60, 518,903.40 and 212,382.80 is: 318,574.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,935.60 : 518,903.40 = 212,382.80 : x
  2. Step 2: Convert to fraction form
    345,935.60/518,903.40 = 212,382.80/x
  3. Step 3: Cross multiply
    345,935.60x = 518,903.40 × 212,382.80
  4. Step 4: Simplify right side
    345,935.60x = 110,206,157,021.52
  5. Step 5: Solve for x
    x = 110,206,157,021.52/345,935.60
  6. Step 6: Final answer
    x = 318,574.20

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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.