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Finding the Fourth Proportional to 154,443.20, 231,664.80 and 65,699.60

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Solution

The fourth proportional to 154,443.20, 231,664.80 and 65,699.60 is: 98,549.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,443.20 : 231,664.80 = 65,699.60 : x
  2. Step 2: Convert to fraction form
    154,443.20/231,664.80 = 65,699.60/x
  3. Step 3: Cross multiply
    154,443.20x = 231,664.80 × 65,699.60
  4. Step 4: Simplify right side
    154,443.20x = 15,220,284,694.08
  5. Step 5: Solve for x
    x = 15,220,284,694.08/154,443.20
  6. Step 6: Final answer
    x = 98,549.40

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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.