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Finding the Fourth Proportional to 296,921.60, 445,090.80 and 265,428.80

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Solution

The fourth proportional to 296,921.60, 445,090.80 and 265,428.80 is: 397,882.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,921.60 : 445,090.80 = 265,428.80 : x
  2. Step 2: Convert to fraction form
    296,921.60/445,090.80 = 265,428.80/x
  3. Step 3: Cross multiply
    296,921.60x = 445,090.80 × 265,428.80
  4. Step 4: Simplify right side
    296,921.60x = 118,139,916,935.04
  5. Step 5: Solve for x
    x = 118,139,916,935.04/296,921.60
  6. Step 6: Final answer
    x = 397,882.53

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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.