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Finding the Fourth Proportional to 305,862.45, 458,793.68 and 84,246.45

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Solution

The fourth proportional to 305,862.45, 458,793.68 and 84,246.45 is: 126,369.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,862.45 : 458,793.68 = 84,246.45 : x
  2. Step 2: Convert to fraction form
    305,862.45/458,793.68 = 84,246.45/x
  3. Step 3: Cross multiply
    305,862.45x = 458,793.68 × 84,246.45
  4. Step 4: Simplify right side
    305,862.45x = 38,651,738,401.20
  5. Step 5: Solve for x
    x = 38,651,738,401.20/305,862.45
  6. Step 6: Final answer
    x = 126,369.68

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1.5x scale

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.