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Finding the Fourth Proportional to 480,884.25, 663,639.80 and 266,020.61

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Solution

The fourth proportional to 480,884.25, 663,639.80 and 266,020.61 is: 367,119.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,884.25 : 663,639.80 = 266,020.61 : x
  2. Step 2: Convert to fraction form
    480,884.25/663,639.80 = 266,020.61/x
  3. Step 3: Cross multiply
    480,884.25x = 663,639.80 × 266,020.61
  4. Step 4: Simplify right side
    480,884.25x = 176,541,864,416.28
  5. Step 5: Solve for x
    x = 176,541,864,416.28/480,884.25
  6. Step 6: Final answer
    x = 367,119.25

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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.