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Finding the Fourth Proportional to 345,364.36, 515,513.57 and 320,036.27

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Solution

The fourth proportional to 345,364.36, 515,513.57 and 320,036.27 is: 477,707.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,364.36 : 515,513.57 = 320,036.27 : x
  2. Step 2: Convert to fraction form
    345,364.36/515,513.57 = 320,036.27/x
  3. Step 3: Cross multiply
    345,364.36x = 515,513.57 × 320,036.27
  4. Step 4: Simplify right side
    345,364.36x = 164,983,035,899.44
  5. Step 5: Solve for x
    x = 164,983,035,899.44/345,364.36
  6. Step 6: Final answer
    x = 477,707.19

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1.5x scale

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.