Home / 431,071.18-646,707.31-131,551.20

Finding the Fourth Proportional to 431,071.18, 646,707.31 and 131,551.20

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Solution

The fourth proportional to 431,071.18, 646,707.31 and 131,551.20 is: 197,357.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,071.18 : 646,707.31 = 131,551.20 : x
  2. Step 2: Convert to fraction form
    431,071.18/646,707.31 = 131,551.20/x
  3. Step 3: Cross multiply
    431,071.18x = 646,707.31 × 131,551.20
  4. Step 4: Simplify right side
    431,071.18x = 85,075,122,350.39
  5. Step 5: Solve for x
    x = 85,075,122,350.39/431,071.18
  6. Step 6: Final answer
    x = 197,357.48

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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.