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Finding the Fourth Proportional to 368,883.29, 507,986.97 and 320,463.11

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Solution

The fourth proportional to 368,883.29, 507,986.97 and 320,463.11 is: 441,307.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,883.29 : 507,986.97 = 320,463.11 : x
  2. Step 2: Convert to fraction form
    368,883.29/507,986.97 = 320,463.11/x
  3. Step 3: Cross multiply
    368,883.29x = 507,986.97 × 320,463.11
  4. Step 4: Simplify right side
    368,883.29x = 162,791,084,245.68
  5. Step 5: Solve for x
    x = 162,791,084,245.68/368,883.29
  6. Step 6: Final answer
    x = 441,307.83

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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.