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Finding the Fourth Proportional to 660,267.60, 990,401.40 and 217,035.60

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Solution

The fourth proportional to 660,267.60, 990,401.40 and 217,035.60 is: 325,553.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,267.60 : 990,401.40 = 217,035.60 : x
  2. Step 2: Convert to fraction form
    660,267.60/990,401.40 = 217,035.60/x
  3. Step 3: Cross multiply
    660,267.60x = 990,401.40 × 217,035.60
  4. Step 4: Simplify right side
    660,267.60x = 214,952,362,089.84
  5. Step 5: Solve for x
    x = 214,952,362,089.84/660,267.60
  6. Step 6: Final answer
    x = 325,553.40

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Similar ratio
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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.