Home / 312,655.22-431,297.76-190,185.04

Finding the Fourth Proportional to 312,655.22, 431,297.76 and 190,185.04

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Solution

The fourth proportional to 312,655.22, 431,297.76 and 190,185.04 is: 262,354.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,655.22 : 431,297.76 = 190,185.04 : x
  2. Step 2: Convert to fraction form
    312,655.22/431,297.76 = 190,185.04/x
  3. Step 3: Cross multiply
    312,655.22x = 431,297.76 × 190,185.04
  4. Step 4: Simplify right side
    312,655.22x = 82,026,381,776.80
  5. Step 5: Solve for x
    x = 82,026,381,776.80/312,655.22
  6. Step 6: Final answer
    x = 262,354.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.