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Finding the Fourth Proportional to 186,872.40, 280,308.60 and 112,222.80

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Solution

The fourth proportional to 186,872.40, 280,308.60 and 112,222.80 is: 168,334.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,872.40 : 280,308.60 = 112,222.80 : x
  2. Step 2: Convert to fraction form
    186,872.40/280,308.60 = 112,222.80/x
  3. Step 3: Cross multiply
    186,872.40x = 280,308.60 × 112,222.80
  4. Step 4: Simplify right side
    186,872.40x = 31,457,015,956.08
  5. Step 5: Solve for x
    x = 31,457,015,956.08/186,872.40
  6. Step 6: Final answer
    x = 168,334.20

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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.