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Finding the Fourth Proportional to 202,461.20, 303,965.40 and 118,307.60

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Solution

The fourth proportional to 202,461.20, 303,965.40 and 118,307.60 is: 177,621.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,461.20 : 303,965.40 = 118,307.60 : x
  2. Step 2: Convert to fraction form
    202,461.20/303,965.40 = 118,307.60/x
  3. Step 3: Cross multiply
    202,461.20x = 303,965.40 × 118,307.60
  4. Step 4: Simplify right side
    202,461.20x = 35,961,416,957.04
  5. Step 5: Solve for x
    x = 35,961,416,957.04/202,461.20
  6. Step 6: Final answer
    x = 177,621.28

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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.