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Finding the Fourth Proportional to 286,266.80, 429,238.20 and 108,779.60

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Solution

The fourth proportional to 286,266.80, 429,238.20 and 108,779.60 is: 163,107.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,266.80 : 429,238.20 = 108,779.60 : x
  2. Step 2: Convert to fraction form
    286,266.80/429,238.20 = 108,779.60/x
  3. Step 3: Cross multiply
    286,266.80x = 429,238.20 × 108,779.60
  4. Step 4: Simplify right side
    286,266.80x = 46,692,359,700.72
  5. Step 5: Solve for x
    x = 46,692,359,700.72/286,266.80
  6. Step 6: Final answer
    x = 163,107.84

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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.