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Finding the Fourth Proportional to 302,354.54, 453,597.40 and 91,987

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Solution

The fourth proportional to 302,354.54, 453,597.40 and 91,987 is: 138,000.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,354.54 : 453,597.40 = 91,987 : x
  2. Step 2: Convert to fraction form
    302,354.54/453,597.40 = 91,987/x
  3. Step 3: Cross multiply
    302,354.54x = 453,597.40 × 91,987
  4. Step 4: Simplify right side
    302,354.54x = 41,725,064,033.80
  5. Step 5: Solve for x
    x = 41,725,064,033.80/302,354.54
  6. Step 6: Final answer
    x = 138,000.45

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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.