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Finding the Fourth Proportional to 285,458.55, 428,053.73 and 165,549.58

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Solution

The fourth proportional to 285,458.55, 428,053.73 and 165,549.58 is: 248,246.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,458.55 : 428,053.73 = 165,549.58 : x
  2. Step 2: Convert to fraction form
    285,458.55/428,053.73 = 165,549.58/x
  3. Step 3: Cross multiply
    285,458.55x = 428,053.73 × 165,549.58
  4. Step 4: Simplify right side
    285,458.55x = 70,864,113,321.05
  5. Step 5: Solve for x
    x = 70,864,113,321.05/285,458.55
  6. Step 6: Final answer
    x = 248,246.60

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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.