Home / 309,216.07-426,710.73-173,255.75

Finding the Fourth Proportional to 309,216.07, 426,710.73 and 173,255.75

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Solution

The fourth proportional to 309,216.07, 426,710.73 and 173,255.75 is: 239,088.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,216.07 : 426,710.73 = 173,255.75 : x
  2. Step 2: Convert to fraction form
    309,216.07/426,710.73 = 173,255.75/x
  3. Step 3: Cross multiply
    309,216.07x = 426,710.73 × 173,255.75
  4. Step 4: Simplify right side
    309,216.07x = 73,930,087,559.20
  5. Step 5: Solve for x
    x = 73,930,087,559.20/309,216.07
  6. Step 6: Final answer
    x = 239,088.76

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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.