Finding the Fourth Proportional to 298,943,816.40, 448,415,724.60 and 257,331,986.10
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Solution
The fourth proportional to 298,943,816.40, 448,415,724.60 and 257,331,986.10 is: 385,997,979.15
Step by Step Solution
- Step 1: Write the proportion equation
298,943,816.40 : 448,415,724.60 = 257,331,986.10 : x - Step 2: Convert to fraction form
298,943,816.40/448,415,724.60 = 257,331,986.10/x - Step 3: Cross multiply
298,943,816.40x = 448,415,724.60 × 257,331,986.10 - Step 4: Simplify right side
298,943,816.40x = 115,391,709,009,788,624 - Step 5: Solve for x
x = 115,391,709,009,788,624/298,943,816.40 - Step 6: Final answer
x = 385,997,979.15
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.