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Finding the Fourth Proportional to 302,268.78, 453,386.73 and 91,890.30

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Solution

The fourth proportional to 302,268.78, 453,386.73 and 91,890.30 is: 137,830.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,268.78 : 453,386.73 = 91,890.30 : x
  2. Step 2: Convert to fraction form
    302,268.78/453,386.73 = 91,890.30/x
  3. Step 3: Cross multiply
    302,268.78x = 453,386.73 × 91,890.30
  4. Step 4: Simplify right side
    302,268.78x = 41,661,842,635.72
  5. Step 5: Solve for x
    x = 41,661,842,635.72/302,268.78
  6. Step 6: Final answer
    x = 137,830.45

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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.