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Finding the Fourth Proportional to 302,008.71, 453,015.80 and 91,646.65

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Solution

The fourth proportional to 302,008.71, 453,015.80 and 91,646.65 is: 137,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,008.71 : 453,015.80 = 91,646.65 : x
  2. Step 2: Convert to fraction form
    302,008.71/453,015.80 = 91,646.65/x
  3. Step 3: Cross multiply
    302,008.71x = 453,015.80 × 91,646.65
  4. Step 4: Simplify right side
    302,008.71x = 41,517,380,918.78
  5. Step 5: Solve for x
    x = 41,517,380,918.78/302,008.71
  6. Step 6: Final answer
    x = 137,470.80

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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.