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Finding the Fourth Proportional to 271,627.90, 407,113.80 and 138,439.60

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Solution

The fourth proportional to 271,627.90, 407,113.80 and 138,439.60 is: 207,492.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,627.90 : 407,113.80 = 138,439.60 : x
  2. Step 2: Convert to fraction form
    271,627.90/407,113.80 = 138,439.60/x
  3. Step 3: Cross multiply
    271,627.90x = 407,113.80 × 138,439.60
  4. Step 4: Simplify right side
    271,627.90x = 56,360,671,626.48
  5. Step 5: Solve for x
    x = 56,360,671,626.48/271,627.90
  6. Step 6: Final answer
    x = 207,492.20

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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.