Home / 309,635.45-427,262.75-173,641.41

Finding the Fourth Proportional to 309,635.45, 427,262.75 and 173,641.41

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Solution

The fourth proportional to 309,635.45, 427,262.75 and 173,641.41 is: 239,605.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,635.45 : 427,262.75 = 173,641.41 : x
  2. Step 2: Convert to fraction form
    309,635.45/427,262.75 = 173,641.41/x
  3. Step 3: Cross multiply
    309,635.45x = 427,262.75 × 173,641.41
  4. Step 4: Simplify right side
    309,635.45x = 74,190,507,110.16
  5. Step 5: Solve for x
    x = 74,190,507,110.16/309,635.45
  6. Step 6: Final answer
    x = 239,605.99

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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.