Finding the Fourth Proportional to 221,289,493.62, 305,517,319.12 and 140,866,862.75
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Solution
The fourth proportional to 221,289,493.62, 305,517,319.12 and 140,866,862.75 is: 194,484,001.73
Step by Step Solution
- Step 1: Write the proportion equation
221,289,493.62 : 305,517,319.12 = 140,866,862.75 : x - Step 2: Convert to fraction form
221,289,493.62/305,517,319.12 = 140,866,862.75/x - Step 3: Cross multiply
221,289,493.62x = 305,517,319.12 × 140,866,862.75 - Step 4: Simplify right side
221,289,493.62x = 43,037,266,260,636,616 - Step 5: Solve for x
x = 43,037,266,260,636,616/221,289,493.62 - Step 6: Final answer
x = 194,484,001.73
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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.