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Finding the Fourth Proportional to 589,241.50, 813,153.27 and 320,969.50

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Solution

The fourth proportional to 589,241.50, 813,153.27 and 320,969.50 is: 442,937.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,241.50 : 813,153.27 = 320,969.50 : x
  2. Step 2: Convert to fraction form
    589,241.50/813,153.27 = 320,969.50/x
  3. Step 3: Cross multiply
    589,241.50x = 813,153.27 × 320,969.50
  4. Step 4: Simplify right side
    589,241.50x = 260,997,398,495.27
  5. Step 5: Solve for x
    x = 260,997,398,495.27/589,241.50
  6. Step 6: Final answer
    x = 442,937.91

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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.