Home / 345,385.13-515,544.49-320,057.02

Finding the Fourth Proportional to 345,385.13, 515,544.49 and 320,057.02

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Solution

The fourth proportional to 345,385.13, 515,544.49 and 320,057.02 is: 477,738.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,385.13 : 515,544.49 = 320,057.02 : x
  2. Step 2: Convert to fraction form
    345,385.13/515,544.49 = 320,057.02/x
  3. Step 3: Cross multiply
    345,385.13x = 515,544.49 × 320,057.02
  4. Step 4: Simplify right side
    345,385.13x = 165,003,628,968.81
  5. Step 5: Solve for x
    x = 165,003,628,968.81/345,385.13
  6. Step 6: Final answer
    x = 477,738.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.