Home / 345,825.66-518,783.88-135,436.26

Finding the Fourth Proportional to 345,825.66, 518,783.88 and 135,436.26

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Solution

The fourth proportional to 345,825.66, 518,783.88 and 135,436.26 is: 203,172.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,825.66 : 518,783.88 = 135,436.26 : x
  2. Step 2: Convert to fraction form
    345,825.66/518,783.88 = 135,436.26/x
  3. Step 3: Cross multiply
    345,825.66x = 518,783.88 × 135,436.26
  4. Step 4: Simplify right side
    345,825.66x = 70,262,148,455.49
  5. Step 5: Solve for x
    x = 70,262,148,455.49/345,825.66
  6. Step 6: Final answer
    x = 203,172.17

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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.