Finding the Fourth Proportional to 278,789,193.03, 384,729,852.98 and 153,354,239.05
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Solution
The fourth proportional to 278,789,193.03, 384,729,852.98 and 153,354,239.05 is: 211,629,271.57
Step by Step Solution
- Step 1: Write the proportion equation
278,789,193.03 : 384,729,852.98 = 153,354,239.05 : x - Step 2: Convert to fraction form
278,789,193.03/384,729,852.98 = 153,354,239.05/x - Step 3: Cross multiply
278,789,193.03x = 384,729,852.98 × 153,354,239.05 - Step 4: Simplify right side
278,789,193.03x = 58,999,953,843,566,280 - Step 5: Solve for x
x = 58,999,953,843,566,280/278,789,193.03 - Step 6: Final answer
x = 211,629,271.57
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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.