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Finding the Fourth Proportional to 481,506.90, 721,569.15 and 354,153.30

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Solution

The fourth proportional to 481,506.90, 721,569.15 and 354,153.30 is: 530,721.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,506.90 : 721,569.15 = 354,153.30 : x
  2. Step 2: Convert to fraction form
    481,506.90/721,569.15 = 354,153.30/x
  3. Step 3: Cross multiply
    481,506.90x = 721,569.15 × 354,153.30
  4. Step 4: Simplify right side
    481,506.90x = 255,546,095,650.70
  5. Step 5: Solve for x
    x = 255,546,095,650.70/481,506.90
  6. Step 6: Final answer
    x = 530,721.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.