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Finding the Fourth Proportional to 285,675.20, 428,205.60 and 108,113.60

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Solution

The fourth proportional to 285,675.20, 428,205.60 and 108,113.60 is: 162,054.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,675.20 : 428,205.60 = 108,113.60 : x
  2. Step 2: Convert to fraction form
    285,675.20/428,205.60 = 108,113.60/x
  3. Step 3: Cross multiply
    285,675.20x = 428,205.60 × 108,113.60
  4. Step 4: Simplify right side
    285,675.20x = 46,294,848,956.16
  5. Step 5: Solve for x
    x = 46,294,848,956.16/285,675.20
  6. Step 6: Final answer
    x = 162,054.14

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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.