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Finding the Fourth Proportional to 368,883.30, 507,986.96 and 320,463.12

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Solution

The fourth proportional to 368,883.30, 507,986.96 and 320,463.12 is: 441,307.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,883.30 : 507,986.96 = 320,463.12 : x
  2. Step 2: Convert to fraction form
    368,883.30/507,986.96 = 320,463.12/x
  3. Step 3: Cross multiply
    368,883.30x = 507,986.96 × 320,463.12
  4. Step 4: Simplify right side
    368,883.30x = 162,791,086,120.92
  5. Step 5: Solve for x
    x = 162,791,086,120.92/368,883.30
  6. Step 6: Final answer
    x = 441,307.82

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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.