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Finding the Fourth Proportional to 306,028.60, 459,115.80 and 148,127.20

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Solution

The fourth proportional to 306,028.60, 459,115.80 and 148,127.20 is: 222,226.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,028.60 : 459,115.80 = 148,127.20 : x
  2. Step 2: Convert to fraction form
    306,028.60/459,115.80 = 148,127.20/x
  3. Step 3: Cross multiply
    306,028.60x = 459,115.80 × 148,127.20
  4. Step 4: Simplify right side
    306,028.60x = 68,007,537,929.76
  5. Step 5: Solve for x
    x = 68,007,537,929.76/306,028.60
  6. Step 6: Final answer
    x = 222,226.09

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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.