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Finding the Fourth Proportional to 626,720.25, 940,215.31 and 194,428.95

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Solution

The fourth proportional to 626,720.25, 940,215.31 and 194,428.95 is: 291,685.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,720.25 : 940,215.31 = 194,428.95 : x
  2. Step 2: Convert to fraction form
    626,720.25/940,215.31 = 194,428.95/x
  3. Step 3: Cross multiply
    626,720.25x = 940,215.31 × 194,428.95
  4. Step 4: Simplify right side
    626,720.25x = 182,805,071,485.35
  5. Step 5: Solve for x
    x = 182,805,071,485.35/626,720.25
  6. Step 6: Final answer
    x = 291,685.28

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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.