Home / 259,038.20-388,442.10-118,839.80

Finding the Fourth Proportional to 259,038.20, 388,442.10 and 118,839.80

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Solution

The fourth proportional to 259,038.20, 388,442.10 and 118,839.80 is: 178,206.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,038.20 : 388,442.10 = 118,839.80 : x
  2. Step 2: Convert to fraction form
    259,038.20/388,442.10 = 118,839.80/x
  3. Step 3: Cross multiply
    259,038.20x = 388,442.10 × 118,839.80
  4. Step 4: Simplify right side
    259,038.20x = 46,162,381,475.58
  5. Step 5: Solve for x
    x = 46,162,381,475.58/259,038.20
  6. Step 6: Final answer
    x = 178,206.85

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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.