Finding the Fourth Proportional to 210,809,490.96, 290,850,782.60 and 117,975,248.40
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Solution
The fourth proportional to 210,809,490.96, 290,850,782.60 and 117,975,248.40 is: 162,768,730.99
Step by Step Solution
- Step 1: Write the proportion equation
210,809,490.96 : 290,850,782.60 = 117,975,248.40 : x - Step 2: Convert to fraction form
210,809,490.96/290,850,782.60 = 117,975,248.40/x - Step 3: Cross multiply
210,809,490.96x = 290,850,782.60 × 117,975,248.40 - Step 4: Simplify right side
210,809,490.96x = 34,313,193,324,569,404 - Step 5: Solve for x
x = 34,313,193,324,569,404/210,809,490.96 - Step 6: Final answer
x = 162,768,730.99
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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.