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Finding the Fourth Proportional to 286,266.80, 428,525.40 and 286,266.80

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Solution

The fourth proportional to 286,266.80, 428,525.40 and 286,266.80 is: 428,525.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,266.80 : 428,525.40 = 286,266.80 : x
  2. Step 2: Convert to fraction form
    286,266.80/428,525.40 = 286,266.80/x
  3. Step 3: Cross multiply
    286,266.80x = 428,525.40 × 286,266.80
  4. Step 4: Simplify right side
    286,266.80x = 122,672,594,976.72
  5. Step 5: Solve for x
    x = 122,672,594,976.72/286,266.80
  6. Step 6: Final answer
    x = 428,525.40

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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.