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Finding the Fourth Proportional to 368,881.29, 507,984.21 and 320,461.11

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Solution

The fourth proportional to 368,881.29, 507,984.21 and 320,461.11 is: 441,305.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,881.29 : 507,984.21 = 320,461.11 : x
  2. Step 2: Convert to fraction form
    368,881.29/507,984.21 = 320,461.11/x
  3. Step 3: Cross multiply
    368,881.29x = 507,984.21 × 320,461.11
  4. Step 4: Simplify right side
    368,881.29x = 162,789,183,799.07
  5. Step 5: Solve for x
    x = 162,789,183,799.07/368,881.29
  6. Step 6: Final answer
    x = 441,305.07

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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.