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Finding the Fourth Proportional to 285,308.40, 428,269.80 and 160,892.40

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Solution

The fourth proportional to 285,308.40, 428,269.80 and 160,892.40 is: 241,511.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,308.40 : 428,269.80 = 160,892.40 : x
  2. Step 2: Convert to fraction form
    285,308.40/428,269.80 = 160,892.40/x
  3. Step 3: Cross multiply
    285,308.40x = 428,269.80 × 160,892.40
  4. Step 4: Simplify right side
    285,308.40x = 68,905,355,969.52
  5. Step 5: Solve for x
    x = 68,905,355,969.52/285,308.40
  6. Step 6: Final answer
    x = 241,511.84

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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.