Home / 280,525,042.80-420,787,564.20-177,212,912.40

Finding the Fourth Proportional to 280,525,042.80, 420,787,564.20 and 177,212,912.40

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Solution

The fourth proportional to 280,525,042.80, 420,787,564.20 and 177,212,912.40 is: 265,819,368.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,525,042.80 : 420,787,564.20 = 177,212,912.40 : x
  2. Step 2: Convert to fraction form
    280,525,042.80/420,787,564.20 = 177,212,912.40/x
  3. Step 3: Cross multiply
    280,525,042.80x = 420,787,564.20 × 177,212,912.40
  4. Step 4: Simplify right side
    280,525,042.80x = 74,568,989,753,583,984
  5. Step 5: Solve for x
    x = 74,568,989,753,583,984/280,525,042.80
  6. Step 6: Final answer
    x = 265,819,368.60

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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.