Home / 309,396.30-426,997.16-173,430.51

Finding the Fourth Proportional to 309,396.30, 426,997.16 and 173,430.51

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Solution

The fourth proportional to 309,396.30, 426,997.16 and 173,430.51 is: 239,351.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,396.30 : 426,997.16 = 173,430.51 : x
  2. Step 2: Convert to fraction form
    309,396.30/426,997.16 = 173,430.51/x
  3. Step 3: Cross multiply
    309,396.30x = 426,997.16 × 173,430.51
  4. Step 4: Simplify right side
    309,396.30x = 74,054,334,360.20
  5. Step 5: Solve for x
    x = 74,054,334,360.20/309,396.30
  6. Step 6: Final answer
    x = 239,351.07

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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.