Finding the Fourth Proportional to 216,874,009.20, 325,562,956.20 and 130,709,708.40
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Solution
The fourth proportional to 216,874,009.20, 325,562,956.20 and 130,709,708.40 is: 196,216,407.99
Step by Step Solution
- Step 1: Write the proportion equation
216,874,009.20 : 325,562,956.20 = 130,709,708.40 : x - Step 2: Convert to fraction form
216,874,009.20/325,562,956.20 = 130,709,708.40/x - Step 3: Cross multiply
216,874,009.20x = 325,562,956.20 × 130,709,708.40 - Step 4: Simplify right side
216,874,009.20x = 42,554,239,070,743,976 - Step 5: Solve for x
x = 42,554,239,070,743,976/216,874,009.20 - Step 6: Final answer
x = 196,216,407.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.