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Finding the Fourth Proportional to 213,090.60, 319,635.90 and 134,293.80

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Solution

The fourth proportional to 213,090.60, 319,635.90 and 134,293.80 is: 201,440.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,090.60 : 319,635.90 = 134,293.80 : x
  2. Step 2: Convert to fraction form
    213,090.60/319,635.90 = 134,293.80/x
  3. Step 3: Cross multiply
    213,090.60x = 319,635.90 × 134,293.80
  4. Step 4: Simplify right side
    213,090.60x = 42,925,119,627.42
  5. Step 5: Solve for x
    x = 42,925,119,627.42/213,090.60
  6. Step 6: Final answer
    x = 201,440.70

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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.