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Finding the Fourth Proportional to 480,884.69, 663,640.40 and 266,021.05

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Solution

The fourth proportional to 480,884.69, 663,640.40 and 266,021.05 is: 367,119.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,884.69 : 663,640.40 = 266,021.05 : x
  2. Step 2: Convert to fraction form
    480,884.69/663,640.40 = 266,021.05/x
  3. Step 3: Cross multiply
    480,884.69x = 663,640.40 × 266,021.05
  4. Step 4: Simplify right side
    480,884.69x = 176,542,315,036.37
  5. Step 5: Solve for x
    x = 176,542,315,036.37/480,884.69
  6. Step 6: Final answer
    x = 367,119.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.