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Finding the Fourth Proportional to 302,509.80, 453,764.70 and 92,120.40

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Solution

The fourth proportional to 302,509.80, 453,764.70 and 92,120.40 is: 138,180.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,509.80 : 453,764.70 = 92,120.40 : x
  2. Step 2: Convert to fraction form
    302,509.80/453,764.70 = 92,120.40/x
  3. Step 3: Cross multiply
    302,509.80x = 453,764.70 × 92,120.40
  4. Step 4: Simplify right side
    302,509.80x = 41,800,985,669.88
  5. Step 5: Solve for x
    x = 41,800,985,669.88/302,509.80
  6. Step 6: Final answer
    x = 138,180.60

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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.