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Finding the Fourth Proportional to 285,318.40, 428,284.80 and 160,902.40

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Solution

The fourth proportional to 285,318.40, 428,284.80 and 160,902.40 is: 241,526.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,318.40 : 428,284.80 = 160,902.40 : x
  2. Step 2: Convert to fraction form
    285,318.40/428,284.80 = 160,902.40/x
  3. Step 3: Cross multiply
    285,318.40x = 428,284.80 × 160,902.40
  4. Step 4: Simplify right side
    285,318.40x = 68,912,052,203.52
  5. Step 5: Solve for x
    x = 68,912,052,203.52/285,318.40
  6. Step 6: Final answer
    x = 241,526.84

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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.