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Finding the Fourth Proportional to 309,610.02, 427,266.72 and 173,674.20

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Solution

The fourth proportional to 309,610.02, 427,266.72 and 173,674.20 is: 239,673.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,610.02 : 427,266.72 = 173,674.20 : x
  2. Step 2: Convert to fraction form
    309,610.02/427,266.72 = 173,674.20/x
  3. Step 3: Cross multiply
    309,610.02x = 427,266.72 × 173,674.20
  4. Step 4: Simplify right side
    309,610.02x = 74,205,205,782.62
  5. Step 5: Solve for x
    x = 74,205,205,782.62/309,610.02
  6. Step 6: Final answer
    x = 239,673.14

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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.