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Finding the Fourth Proportional to 287,211.60, 430,817.40 and 227,725.20

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Solution

The fourth proportional to 287,211.60, 430,817.40 and 227,725.20 is: 341,587.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,211.60 : 430,817.40 = 227,725.20 : x
  2. Step 2: Convert to fraction form
    287,211.60/430,817.40 = 227,725.20/x
  3. Step 3: Cross multiply
    287,211.60x = 430,817.40 × 227,725.20
  4. Step 4: Simplify right side
    287,211.60x = 98,107,978,578.48
  5. Step 5: Solve for x
    x = 98,107,978,578.48/287,211.60
  6. Step 6: Final answer
    x = 341,587.80

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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.