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Finding the Fourth Proportional to 660,661.24, 990,991.68 and 187,350.64

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Solution

The fourth proportional to 660,661.24, 990,991.68 and 187,350.64 is: 281,025.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,661.24 : 990,991.68 = 187,350.64 : x
  2. Step 2: Convert to fraction form
    660,661.24/990,991.68 = 187,350.64/x
  3. Step 3: Cross multiply
    660,661.24x = 990,991.68 × 187,350.64
  4. Step 4: Simplify right side
    660,661.24x = 185,662,925,482.68
  5. Step 5: Solve for x
    x = 185,662,925,482.68/660,661.24
  6. Step 6: Final answer
    x = 281,025.91

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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.