Finding the Fourth Proportional to 208,009,814.70, 312,014,722.05 and 147,543,638.70
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Solution
The fourth proportional to 208,009,814.70, 312,014,722.05 and 147,543,638.70 is: 221,315,458.05
Step by Step Solution
- Step 1: Write the proportion equation
208,009,814.70 : 312,014,722.05 = 147,543,638.70 : x - Step 2: Convert to fraction form
208,009,814.70/312,014,722.05 = 147,543,638.70/x - Step 3: Cross multiply
208,009,814.70x = 312,014,722.05 × 147,543,638.70 - Step 4: Simplify right side
208,009,814.70x = 46,035,787,419,226,120 - Step 5: Solve for x
x = 46,035,787,419,226,120/208,009,814.70 - Step 6: Final answer
x = 221,315,458.05
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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.