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Finding the Fourth Proportional to 302,911.90, 454,331.40 and 125,400.40

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Solution

The fourth proportional to 302,911.90, 454,331.40 and 125,400.40 is: 188,085.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,911.90 : 454,331.40 = 125,400.40 : x
  2. Step 2: Convert to fraction form
    302,911.90/454,331.40 = 125,400.40/x
  3. Step 3: Cross multiply
    302,911.90x = 454,331.40 × 125,400.40
  4. Step 4: Simplify right side
    302,911.90x = 56,973,339,292.56
  5. Step 5: Solve for x
    x = 56,973,339,292.56/302,911.90
  6. Step 6: Final answer
    x = 188,085.51

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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.