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Finding the Fourth Proportional to 666,584.64, 999,980.84 and 217,201.10

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Solution

The fourth proportional to 666,584.64, 999,980.84 and 217,201.10 is: 325,835.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,584.64 : 999,980.84 = 217,201.10 : x
  2. Step 2: Convert to fraction form
    666,584.64/999,980.84 = 217,201.10/x
  3. Step 3: Cross multiply
    666,584.64x = 999,980.84 × 217,201.10
  4. Step 4: Simplify right side
    666,584.64x = 217,196,933,970.02
  5. Step 5: Solve for x
    x = 217,196,933,970.02/666,584.64
  6. Step 6: Final answer
    x = 325,835.49

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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.