Home / 345,718.89-518,573.19-210,822.60

Finding the Fourth Proportional to 345,718.89, 518,573.19 and 210,822.60

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Solution

The fourth proportional to 345,718.89, 518,573.19 and 210,822.60 is: 316,230.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,718.89 : 518,573.19 = 210,822.60 : x
  2. Step 2: Convert to fraction form
    345,718.89/518,573.19 = 210,822.60/x
  3. Step 3: Cross multiply
    345,718.89x = 518,573.19 × 210,822.60
  4. Step 4: Simplify right side
    345,718.89x = 109,326,948,206.09
  5. Step 5: Solve for x
    x = 109,326,948,206.09/345,718.89
  6. Step 6: Final answer
    x = 316,230.76

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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.