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Finding the Fourth Proportional to 257,804.62, 355,765.02 and 143,076.60

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Solution

The fourth proportional to 257,804.62, 355,765.02 and 143,076.60 is: 197,442.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,804.62 : 355,765.02 = 143,076.60 : x
  2. Step 2: Convert to fraction form
    257,804.62/355,765.02 = 143,076.60/x
  3. Step 3: Cross multiply
    257,804.62x = 355,765.02 × 143,076.60
  4. Step 4: Simplify right side
    257,804.62x = 50,901,649,460.53
  5. Step 5: Solve for x
    x = 50,901,649,460.53/257,804.62
  6. Step 6: Final answer
    x = 197,442.74

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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.