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Finding the Fourth Proportional to 186,622.40, 280,225.20 and 107,890.40

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Solution

The fourth proportional to 186,622.40, 280,225.20 and 107,890.40 is: 162,004.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,622.40 : 280,225.20 = 107,890.40 : x
  2. Step 2: Convert to fraction form
    186,622.40/280,225.20 = 107,890.40/x
  3. Step 3: Cross multiply
    186,622.40x = 280,225.20 × 107,890.40
  4. Step 4: Simplify right side
    186,622.40x = 30,233,608,918.08
  5. Step 5: Solve for x
    x = 30,233,608,918.08/186,622.40
  6. Step 6: Final answer
    x = 162,004.18

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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.