Home / 345,397.32-518,213.61-210,731.04

Finding the Fourth Proportional to 345,397.32, 518,213.61 and 210,731.04

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Solution

The fourth proportional to 345,397.32, 518,213.61 and 210,731.04 is: 316,168.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,397.32 : 518,213.61 = 210,731.04 : x
  2. Step 2: Convert to fraction form
    345,397.32/518,213.61 = 210,731.04/x
  3. Step 3: Cross multiply
    345,397.32x = 518,213.61 × 210,731.04
  4. Step 4: Simplify right side
    345,397.32x = 109,203,692,977.45
  5. Step 5: Solve for x
    x = 109,203,692,977.45/345,397.32
  6. Step 6: Final answer
    x = 316,168.33

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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.