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Finding the Fourth Proportional to 419,159.79, 628,687.71 and 119,666.61

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Solution

The fourth proportional to 419,159.79, 628,687.71 and 119,666.61 is: 179,485.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,159.79 : 628,687.71 = 119,666.61 : x
  2. Step 2: Convert to fraction form
    419,159.79/628,687.71 = 119,666.61/x
  3. Step 3: Cross multiply
    419,159.79x = 628,687.71 × 119,666.61
  4. Step 4: Simplify right side
    419,159.79x = 75,232,927,004.36
  5. Step 5: Solve for x
    x = 75,232,927,004.36/419,159.79
  6. Step 6: Final answer
    x = 179,485.08

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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.