Home / 285,847.20-428,770.80-98,877.60

Finding the Fourth Proportional to 285,847.20, 428,770.80 and 98,877.60

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Solution

The fourth proportional to 285,847.20, 428,770.80 and 98,877.60 is: 148,316.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,847.20 : 428,770.80 = 98,877.60 : x
  2. Step 2: Convert to fraction form
    285,847.20/428,770.80 = 98,877.60/x
  3. Step 3: Cross multiply
    285,847.20x = 428,770.80 × 98,877.60
  4. Step 4: Simplify right side
    285,847.20x = 42,395,827,654.08
  5. Step 5: Solve for x
    x = 42,395,827,654.08/285,847.20
  6. Step 6: Final answer
    x = 148,316.40

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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.