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Finding the Fourth Proportional to 355,452.98, 490,534.52 and 212,295.60

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Solution

The fourth proportional to 355,452.98, 490,534.52 and 212,295.60 is: 292,973.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,452.98 : 490,534.52 = 212,295.60 : x
  2. Step 2: Convert to fraction form
    355,452.98/490,534.52 = 212,295.60/x
  3. Step 3: Cross multiply
    355,452.98x = 490,534.52 × 212,295.60
  4. Step 4: Simplify right side
    355,452.98x = 104,138,319,182.63
  5. Step 5: Solve for x
    x = 104,138,319,182.63/355,452.98
  6. Step 6: Final answer
    x = 292,973.55

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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.