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Finding the Fourth Proportional to 287,208.60, 430,812.90 and 227,722.20

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Solution

The fourth proportional to 287,208.60, 430,812.90 and 227,722.20 is: 341,583.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,208.60 : 430,812.90 = 227,722.20 : x
  2. Step 2: Convert to fraction form
    287,208.60/430,812.90 = 227,722.20/x
  3. Step 3: Cross multiply
    287,208.60x = 430,812.90 × 227,722.20
  4. Step 4: Simplify right side
    287,208.60x = 98,105,661,376.38
  5. Step 5: Solve for x
    x = 98,105,661,376.38/287,208.60
  6. Step 6: Final answer
    x = 341,583.30

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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.