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Finding the Fourth Proportional to 280,615.63, 421,028.01 and 168,376.40

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Solution

The fourth proportional to 280,615.63, 421,028.01 and 168,376.40 is: 252,627.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,615.63 : 421,028.01 = 168,376.40 : x
  2. Step 2: Convert to fraction form
    280,615.63/421,028.01 = 168,376.40/x
  3. Step 3: Cross multiply
    280,615.63x = 421,028.01 × 168,376.40
  4. Step 4: Simplify right side
    280,615.63x = 70,891,180,622.96
  5. Step 5: Solve for x
    x = 70,891,180,622.96/280,615.63
  6. Step 6: Final answer
    x = 252,627.35

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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.