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Finding the Fourth Proportional to 355,345.02, 490,361.58 and 194,205.51

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Solution

The fourth proportional to 355,345.02, 490,361.58 and 194,205.51 is: 267,995.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,345.02 : 490,361.58 = 194,205.51 : x
  2. Step 2: Convert to fraction form
    355,345.02/490,361.58 = 194,205.51/x
  3. Step 3: Cross multiply
    355,345.02x = 490,361.58 × 194,205.51
  4. Step 4: Simplify right side
    355,345.02x = 95,230,920,728.31
  5. Step 5: Solve for x
    x = 95,230,920,728.31/355,345.02
  6. Step 6: Final answer
    x = 267,995.65

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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.