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Finding the Fourth Proportional to 190,871.20, 286,306.80 and 148,880.80

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Solution

The fourth proportional to 190,871.20, 286,306.80 and 148,880.80 is: 223,321.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,871.20 : 286,306.80 = 148,880.80 : x
  2. Step 2: Convert to fraction form
    190,871.20/286,306.80 = 148,880.80/x
  3. Step 3: Cross multiply
    190,871.20x = 286,306.80 × 148,880.80
  4. Step 4: Simplify right side
    190,871.20x = 42,625,585,429.44
  5. Step 5: Solve for x
    x = 42,625,585,429.44/190,871.20
  6. Step 6: Final answer
    x = 223,321.20

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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.