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Finding the Fourth Proportional to 355,803.50, 491,308.01 and 254,140.81

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Solution

The fourth proportional to 355,803.50, 491,308.01 and 254,140.81 is: 350,928.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,803.50 : 491,308.01 = 254,140.81 : x
  2. Step 2: Convert to fraction form
    355,803.50/491,308.01 = 254,140.81/x
  3. Step 3: Cross multiply
    355,803.50x = 491,308.01 × 254,140.81
  4. Step 4: Simplify right side
    355,803.50x = 124,861,415,620.89
  5. Step 5: Solve for x
    x = 124,861,415,620.89/355,803.50
  6. Step 6: Final answer
    x = 350,928.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.