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Finding the Fourth Proportional to 302,912.40, 454,332.15 and 125,400.90

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Solution

The fourth proportional to 302,912.40, 454,332.15 and 125,400.90 is: 188,086.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,912.40 : 454,332.15 = 125,400.90 : x
  2. Step 2: Convert to fraction form
    302,912.40/454,332.15 = 125,400.90/x
  3. Step 3: Cross multiply
    302,912.40x = 454,332.15 × 125,400.90
  4. Step 4: Simplify right side
    302,912.40x = 56,973,660,508.94
  5. Step 5: Solve for x
    x = 56,973,660,508.94/302,912.40
  6. Step 6: Final answer
    x = 188,086.26

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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.