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Finding the Fourth Proportional to 395,775.36, 546,143 and 252,519.56

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Solution

The fourth proportional to 395,775.36, 546,143 and 252,519.56 is: 348,459.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,775.36 : 546,143 = 252,519.56 : x
  2. Step 2: Convert to fraction form
    395,775.36/546,143 = 252,519.56/x
  3. Step 3: Cross multiply
    395,775.36x = 546,143 × 252,519.56
  4. Step 4: Simplify right side
    395,775.36x = 137,911,790,057.08
  5. Step 5: Solve for x
    x = 137,911,790,057.08/395,775.36
  6. Step 6: Final answer
    x = 348,459.77

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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.