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Finding the Fourth Proportional to 402,216.55, 603,315.60 and 202,483.30

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Solution

The fourth proportional to 402,216.55, 603,315.60 and 202,483.30 is: 303,720.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,216.55 : 603,315.60 = 202,483.30 : x
  2. Step 2: Convert to fraction form
    402,216.55/603,315.60 = 202,483.30/x
  3. Step 3: Cross multiply
    402,216.55x = 603,315.60 × 202,483.30
  4. Step 4: Simplify right side
    402,216.55x = 122,161,333,629.48
  5. Step 5: Solve for x
    x = 122,161,333,629.48/402,216.55
  6. Step 6: Final answer
    x = 303,720.31

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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.