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Finding the Fourth Proportional to 418,825.01, 628,111.93 and 178,929.22

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Solution

The fourth proportional to 418,825.01, 628,111.93 and 178,929.22 is: 268,340.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,825.01 : 628,111.93 = 178,929.22 : x
  2. Step 2: Convert to fraction form
    418,825.01/628,111.93 = 178,929.22/x
  3. Step 3: Cross multiply
    418,825.01x = 628,111.93 × 178,929.22
  4. Step 4: Simplify right side
    418,825.01x = 112,387,576,812.95
  5. Step 5: Solve for x
    x = 112,387,576,812.95/418,825.01
  6. Step 6: Final answer
    x = 268,340.18

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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.