Home / 401,720.65-602,157.31-131,778.29

Finding the Fourth Proportional to 401,720.65, 602,157.31 and 131,778.29

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Solution

The fourth proportional to 401,720.65, 602,157.31 and 131,778.29 is: 197,528.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,720.65 : 602,157.31 = 131,778.29 : x
  2. Step 2: Convert to fraction form
    401,720.65/602,157.31 = 131,778.29/x
  3. Step 3: Cross multiply
    401,720.65x = 602,157.31 × 131,778.29
  4. Step 4: Simplify right side
    401,720.65x = 79,351,262,540.00
  5. Step 5: Solve for x
    x = 79,351,262,540.00/401,720.65
  6. Step 6: Final answer
    x = 197,528.46

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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.