Finding the Fourth Proportional to 382,839,173.12, 528,315,371.52 and 208,998,917.12
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Solution
The fourth proportional to 382,839,173.12, 528,315,371.52 and 208,998,917.12 is: 288,417,038.53
Step by Step Solution
- Step 1: Write the proportion equation
382,839,173.12 : 528,315,371.52 = 208,998,917.12 : x - Step 2: Convert to fraction form
382,839,173.12/528,315,371.52 = 208,998,917.12/x - Step 3: Cross multiply
382,839,173.12x = 528,315,371.52 × 208,998,917.12 - Step 4: Simplify right side
382,839,173.12x = 110,417,340,545,530,480 - Step 5: Solve for x
x = 110,417,340,545,530,480/382,839,173.12 - Step 6: Final answer
x = 288,417,038.53
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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.