Home / 345,003.24-476,023.12-290,021.66

Finding the Fourth Proportional to 345,003.24, 476,023.12 and 290,021.66

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Solution

The fourth proportional to 345,003.24, 476,023.12 and 290,021.66 is: 400,161.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,003.24 : 476,023.12 = 290,021.66 : x
  2. Step 2: Convert to fraction form
    345,003.24/476,023.12 = 290,021.66/x
  3. Step 3: Cross multiply
    345,003.24x = 476,023.12 × 290,021.66
  4. Step 4: Simplify right side
    345,003.24x = 138,057,015,460.78
  5. Step 5: Solve for x
    x = 138,057,015,460.78/345,003.24
  6. Step 6: Final answer
    x = 400,161.50

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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.