Home / 355,197.12-490,181.66-212,040.28

Finding the Fourth Proportional to 355,197.12, 490,181.66 and 212,040.28

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Solution

The fourth proportional to 355,197.12, 490,181.66 and 212,040.28 is: 292,621.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,197.12 : 490,181.66 = 212,040.28 : x
  2. Step 2: Convert to fraction form
    355,197.12/490,181.66 = 212,040.28/x
  3. Step 3: Cross multiply
    355,197.12x = 490,181.66 × 212,040.28
  4. Step 4: Simplify right side
    355,197.12x = 103,938,256,437.27
  5. Step 5: Solve for x
    x = 103,938,256,437.27/355,197.12
  6. Step 6: Final answer
    x = 292,621.34

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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.