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Finding the Fourth Proportional to 480,816, 721,224 and 130,608

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Solution

The fourth proportional to 480,816, 721,224 and 130,608 is: 195,912

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,816 : 721,224 = 130,608 : x
  2. Step 2: Convert to fraction form
    480,816/721,224 = 130,608/x
  3. Step 3: Cross multiply
    480,816x = 721,224 × 130,608
  4. Step 4: Simplify right side
    480,816x = 94,197,624,192
  5. Step 5: Solve for x
    x = 94,197,624,192/480,816
  6. Step 6: Final answer
    x = 195,912

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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.