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Finding the Fourth Proportional to 268,907.20, 403,749.60 and 202,811.20

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Solution

The fourth proportional to 268,907.20, 403,749.60 and 202,811.20 is: 304,510.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,907.20 : 403,749.60 = 202,811.20 : x
  2. Step 2: Convert to fraction form
    268,907.20/403,749.60 = 202,811.20/x
  3. Step 3: Cross multiply
    268,907.20x = 403,749.60 × 202,811.20
  4. Step 4: Simplify right side
    268,907.20x = 81,884,940,875.52
  5. Step 5: Solve for x
    x = 81,884,940,875.52/268,907.20
  6. Step 6: Final answer
    x = 304,510.03

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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.