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Finding the Fourth Proportional to 413,768.80, 620,653.20 and 272,051.20

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Solution

The fourth proportional to 413,768.80, 620,653.20 and 272,051.20 is: 408,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,768.80 : 620,653.20 = 272,051.20 : x
  2. Step 2: Convert to fraction form
    413,768.80/620,653.20 = 272,051.20/x
  3. Step 3: Cross multiply
    413,768.80x = 620,653.20 × 272,051.20
  4. Step 4: Simplify right side
    413,768.80x = 168,849,447,843.84
  5. Step 5: Solve for x
    x = 168,849,447,843.84/413,768.80
  6. Step 6: Final answer
    x = 408,076.80

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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.