Home / 445,570.20-668,420.10-145,999.80

Finding the Fourth Proportional to 445,570.20, 668,420.10 and 145,999.80

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Solution

The fourth proportional to 445,570.20, 668,420.10 and 145,999.80 is: 219,020.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,570.20 : 668,420.10 = 145,999.80 : x
  2. Step 2: Convert to fraction form
    445,570.20/668,420.10 = 145,999.80/x
  3. Step 3: Cross multiply
    445,570.20x = 668,420.10 × 145,999.80
  4. Step 4: Simplify right side
    445,570.20x = 97,589,200,915.98
  5. Step 5: Solve for x
    x = 97,589,200,915.98/445,570.20
  6. Step 6: Final answer
    x = 219,020.93

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1.5x scale

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.