Finding the Fourth Proportional to 239,696,641.68, 330,687,249.80 and 139,207,972.72
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Solution
The fourth proportional to 239,696,641.68, 330,687,249.80 and 139,207,972.72 is: 192,052,343.02
Step by Step Solution
- Step 1: Write the proportion equation
239,696,641.68 : 330,687,249.80 = 139,207,972.72 : x - Step 2: Convert to fraction form
239,696,641.68/330,687,249.80 = 139,207,972.72/x - Step 3: Cross multiply
239,696,641.68x = 330,687,249.80 × 139,207,972.72 - Step 4: Simplify right side
239,696,641.68x = 46,034,301,649,010,224 - Step 5: Solve for x
x = 46,034,301,649,010,224/239,696,641.68 - Step 6: Final answer
x = 192,052,343.02
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.