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Finding the Fourth Proportional to 660,066.60, 990,002.70 and 186,799.80

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Solution

The fourth proportional to 660,066.60, 990,002.70 and 186,799.80 is: 280,172.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,066.60 : 990,002.70 = 186,799.80 : x
  2. Step 2: Convert to fraction form
    660,066.60/990,002.70 = 186,799.80/x
  3. Step 3: Cross multiply
    660,066.60x = 990,002.70 × 186,799.80
  4. Step 4: Simplify right side
    660,066.60x = 184,932,306,359.46
  5. Step 5: Solve for x
    x = 184,932,306,359.46/660,066.60
  6. Step 6: Final answer
    x = 280,172.19

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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.