Home / 311,091.20-466,636.80-285,286.40

Finding the Fourth Proportional to 311,091.20, 466,636.80 and 285,286.40

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Solution

The fourth proportional to 311,091.20, 466,636.80 and 285,286.40 is: 427,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,091.20 : 466,636.80 = 285,286.40 : x
  2. Step 2: Convert to fraction form
    311,091.20/466,636.80 = 285,286.40/x
  3. Step 3: Cross multiply
    311,091.20x = 466,636.80 × 285,286.40
  4. Step 4: Simplify right side
    311,091.20x = 133,125,132,779.52
  5. Step 5: Solve for x
    x = 133,125,132,779.52/311,091.20
  6. Step 6: Final answer
    x = 427,929.60

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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.