Home / 377,515.15-520,993.38-216,380.64

Finding the Fourth Proportional to 377,515.15, 520,993.38 and 216,380.64

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Solution

The fourth proportional to 377,515.15, 520,993.38 and 216,380.64 is: 298,618.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,515.15 : 520,993.38 = 216,380.64 : x
  2. Step 2: Convert to fraction form
    377,515.15/520,993.38 = 216,380.64/x
  3. Step 3: Cross multiply
    377,515.15x = 520,993.38 × 216,380.64
  4. Step 4: Simplify right side
    377,515.15x = 112,732,878,395.20
  5. Step 5: Solve for x
    x = 112,732,878,395.20/377,515.15
  6. Step 6: Final answer
    x = 298,618.16

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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.