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Finding the Fourth Proportional to 281,720.40, 422,580.60 and 237,980.40

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Solution

The fourth proportional to 281,720.40, 422,580.60 and 237,980.40 is: 356,970.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,720.40 : 422,580.60 = 237,980.40 : x
  2. Step 2: Convert to fraction form
    281,720.40/422,580.60 = 237,980.40/x
  3. Step 3: Cross multiply
    281,720.40x = 422,580.60 × 237,980.40
  4. Step 4: Simplify right side
    281,720.40x = 100,565,900,220.24
  5. Step 5: Solve for x
    x = 100,565,900,220.24/281,720.40
  6. Step 6: Final answer
    x = 356,970.60

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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.