Home / 345,914.60-518,969.10-168,427.40

Finding the Fourth Proportional to 345,914.60, 518,969.10 and 168,427.40

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Solution

The fourth proportional to 345,914.60, 518,969.10 and 168,427.40 is: 252,688.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,914.60 : 518,969.10 = 168,427.40 : x
  2. Step 2: Convert to fraction form
    345,914.60/518,969.10 = 168,427.40/x
  3. Step 3: Cross multiply
    345,914.60x = 518,969.10 × 168,427.40
  4. Step 4: Simplify right side
    345,914.60x = 87,408,616,193.34
  5. Step 5: Solve for x
    x = 87,408,616,193.34/345,914.60
  6. Step 6: Final answer
    x = 252,688.43

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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.