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Finding the Fourth Proportional to 280,613.63, 421,025.01 and 168,374.40

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Solution

The fourth proportional to 280,613.63, 421,025.01 and 168,374.40 is: 252,624.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,613.63 : 421,025.01 = 168,374.40 : x
  2. Step 2: Convert to fraction form
    280,613.63/421,025.01 = 168,374.40/x
  3. Step 3: Cross multiply
    280,613.63x = 421,025.01 × 168,374.40
  4. Step 4: Simplify right side
    280,613.63x = 70,889,831,588.66
  5. Step 5: Solve for x
    x = 70,889,831,588.66/280,613.63
  6. Step 6: Final answer
    x = 252,624.34

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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.