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Finding the Fourth Proportional to 271,620.40, 407,430.60 and 256,068.40

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Solution

The fourth proportional to 271,620.40, 407,430.60 and 256,068.40 is: 384,102.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,620.40 : 407,430.60 = 256,068.40 : x
  2. Step 2: Convert to fraction form
    271,620.40/407,430.60 = 256,068.40/x
  3. Step 3: Cross multiply
    271,620.40x = 407,430.60 × 256,068.40
  4. Step 4: Simplify right side
    271,620.40x = 104,330,101,853.04
  5. Step 5: Solve for x
    x = 104,330,101,853.04/271,620.40
  6. Step 6: Final answer
    x = 384,102.60

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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.