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Finding the Fourth Proportional to 402,039.36, 554,812.68 and 220,752.84

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Solution

The fourth proportional to 402,039.36, 554,812.68 and 220,752.84 is: 304,638.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,039.36 : 554,812.68 = 220,752.84 : x
  2. Step 2: Convert to fraction form
    402,039.36/554,812.68 = 220,752.84/x
  3. Step 3: Cross multiply
    402,039.36x = 554,812.68 × 220,752.84
  4. Step 4: Simplify right side
    402,039.36x = 122,476,474,778.01
  5. Step 5: Solve for x
    x = 122,476,474,778.01/402,039.36
  6. Step 6: Final answer
    x = 304,638.02

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