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Finding the Fourth Proportional to 30,200.40, 45,300.60 and 10,480.95

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Solution

The fourth proportional to 30,200.40, 45,300.60 and 10,480.95 is: 15,721.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,200.40 : 45,300.60 = 10,480.95 : x
  2. Step 2: Convert to fraction form
    30,200.40/45,300.60 = 10,480.95/x
  3. Step 3: Cross multiply
    30,200.40x = 45,300.60 × 10,480.95
  4. Step 4: Simplify right side
    30,200.40x = 474,793,323.57
  5. Step 5: Solve for x
    x = 474,793,323.57/30,200.40
  6. Step 6: Final answer
    x = 15,721.43

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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.