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Finding the Fourth Proportional to 302,556.90, 453,835.35 and 80,940.90

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Solution

The fourth proportional to 302,556.90, 453,835.35 and 80,940.90 is: 121,411.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,556.90 : 453,835.35 = 80,940.90 : x
  2. Step 2: Convert to fraction form
    302,556.90/453,835.35 = 80,940.90/x
  3. Step 3: Cross multiply
    302,556.90x = 453,835.35 × 80,940.90
  4. Step 4: Simplify right side
    302,556.90x = 36,733,841,680.82
  5. Step 5: Solve for x
    x = 36,733,841,680.82/302,556.90
  6. Step 6: Final answer
    x = 121,411.35

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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.