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Finding the Fourth Proportional to 311,290.08, 429,574.44 and 190,422.48

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Solution

The fourth proportional to 311,290.08, 429,574.44 and 190,422.48 is: 262,779.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,290.08 : 429,574.44 = 190,422.48 : x
  2. Step 2: Convert to fraction form
    311,290.08/429,574.44 = 190,422.48/x
  3. Step 3: Cross multiply
    311,290.08x = 429,574.44 × 190,422.48
  4. Step 4: Simplify right side
    311,290.08x = 81,800,630,209.41
  5. Step 5: Solve for x
    x = 81,800,630,209.41/311,290.08
  6. Step 6: Final answer
    x = 262,779.43

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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.