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Finding the Fourth Proportional to 313,637.01, 435,039.77 and 302,883.72

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Solution

The fourth proportional to 313,637.01, 435,039.77 and 302,883.72 is: 420,124.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,637.01 : 435,039.77 = 302,883.72 : x
  2. Step 2: Convert to fraction form
    313,637.01/435,039.77 = 302,883.72/x
  3. Step 3: Cross multiply
    313,637.01x = 435,039.77 × 302,883.72
  4. Step 4: Simplify right side
    313,637.01x = 131,766,462,371.13
  5. Step 5: Solve for x
    x = 131,766,462,371.13/313,637.01
  6. Step 6: Final answer
    x = 420,124.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.