Home / 345,427.05-518,210.43-145,747.86

Finding the Fourth Proportional to 345,427.05, 518,210.43 and 145,747.86

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Solution

The fourth proportional to 345,427.05, 518,210.43 and 145,747.86 is: 218,651.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,427.05 : 518,210.43 = 145,747.86 : x
  2. Step 2: Convert to fraction form
    345,427.05/518,210.43 = 145,747.86/x
  3. Step 3: Cross multiply
    345,427.05x = 518,210.43 × 145,747.86
  4. Step 4: Simplify right side
    345,427.05x = 75,528,061,202.18
  5. Step 5: Solve for x
    x = 75,528,061,202.18/345,427.05
  6. Step 6: Final answer
    x = 218,651.26

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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.