Finding the Fourth Proportional to 289,278,699.08, 399,207,537.06 and 157,120,972.52
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Solution
The fourth proportional to 289,278,699.08, 399,207,537.06 and 157,120,972.52 is: 216,828,534.76
Step by Step Solution
- Step 1: Write the proportion equation
289,278,699.08 : 399,207,537.06 = 157,120,972.52 : x - Step 2: Convert to fraction form
289,278,699.08/399,207,537.06 = 157,120,972.52/x - Step 3: Cross multiply
289,278,699.08x = 399,207,537.06 × 157,120,972.52 - Step 4: Simplify right side
289,278,699.08x = 62,723,876,460,181,144 - Step 5: Solve for x
x = 62,723,876,460,181,144/289,278,699.08 - Step 6: Final answer
x = 216,828,534.76
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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.