Home / 289,664.19-399,317.85-203,360.46

Finding the Fourth Proportional to 289,664.19, 399,317.85 and 203,360.46

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Solution

The fourth proportional to 289,664.19, 399,317.85 and 203,360.46 is: 280,343.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,664.19 : 399,317.85 = 203,360.46 : x
  2. Step 2: Convert to fraction form
    289,664.19/399,317.85 = 203,360.46/x
  3. Step 3: Cross multiply
    289,664.19x = 399,317.85 × 203,360.46
  4. Step 4: Simplify right side
    289,664.19x = 81,205,461,662.21
  5. Step 5: Solve for x
    x = 81,205,461,662.21/289,664.19
  6. Step 6: Final answer
    x = 280,343.46

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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.