Finding the Fourth Proportional to 268,997,965.74, 371,217,865.68 and 155,989,362.06
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Solution
The fourth proportional to 268,997,965.74, 371,217,865.68 and 155,989,362.06 is: 215,265,709.89
Step by Step Solution
- Step 1: Write the proportion equation
268,997,965.74 : 371,217,865.68 = 155,989,362.06 : x - Step 2: Convert to fraction form
268,997,965.74/371,217,865.68 = 155,989,362.06/x - Step 3: Cross multiply
268,997,965.74x = 371,217,865.68 × 155,989,362.06 - Step 4: Simplify right side
268,997,965.74x = 57,906,038,052,697,968 - Step 5: Solve for x
x = 57,906,038,052,697,968/268,997,965.74 - Step 6: Final answer
x = 215,265,709.89
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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.