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Finding the Fourth Proportional to 309,034.22, 426,431.22 and 180,001.02

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Solution

The fourth proportional to 309,034.22, 426,431.22 and 180,001.02 is: 248,380.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,034.22 : 426,431.22 = 180,001.02 : x
  2. Step 2: Convert to fraction form
    309,034.22/426,431.22 = 180,001.02/x
  3. Step 3: Cross multiply
    309,034.22x = 426,431.22 × 180,001.02
  4. Step 4: Simplify right side
    309,034.22x = 76,758,054,559.84
  5. Step 5: Solve for x
    x = 76,758,054,559.84/309,034.22
  6. Step 6: Final answer
    x = 248,380.44

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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.