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Finding the Fourth Proportional to 302,338.90, 453,070.95 and 133,721.20

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Solution

The fourth proportional to 302,338.90, 453,070.95 and 133,721.20 is: 200,388.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,338.90 : 453,070.95 = 133,721.20 : x
  2. Step 2: Convert to fraction form
    302,338.90/453,070.95 = 133,721.20/x
  3. Step 3: Cross multiply
    302,338.90x = 453,070.95 × 133,721.20
  4. Step 4: Simplify right side
    302,338.90x = 60,585,191,119.14
  5. Step 5: Solve for x
    x = 60,585,191,119.14/302,338.90
  6. Step 6: Final answer
    x = 200,388.34

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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.