Home / 405,916.80-608,875.20-125,433.60

Finding the Fourth Proportional to 405,916.80, 608,875.20 and 125,433.60

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Solution

The fourth proportional to 405,916.80, 608,875.20 and 125,433.60 is: 188,150.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,916.80 : 608,875.20 = 125,433.60 : x
  2. Step 2: Convert to fraction form
    405,916.80/608,875.20 = 125,433.60/x
  3. Step 3: Cross multiply
    405,916.80x = 608,875.20 × 125,433.60
  4. Step 4: Simplify right side
    405,916.80x = 76,373,408,286.72
  5. Step 5: Solve for x
    x = 76,373,408,286.72/405,916.80
  6. Step 6: Final answer
    x = 188,150.40

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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.