Finding the Fourth Proportional to 258,690,228.20, 387,468,471.90 and 229,968,794.60
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Solution
The fourth proportional to 258,690,228.20, 387,468,471.90 and 229,968,794.60 is: 344,449,259.06
Step by Step Solution
- Step 1: Write the proportion equation
258,690,228.20 : 387,468,471.90 = 229,968,794.60 : x - Step 2: Convert to fraction form
258,690,228.20/387,468,471.90 = 229,968,794.60/x - Step 3: Cross multiply
258,690,228.20x = 387,468,471.90 × 229,968,794.60 - Step 4: Simplify right side
258,690,228.20x = 89,105,657,428,346,960 - Step 5: Solve for x
x = 89,105,657,428,346,960/258,690,228.20 - Step 6: Final answer
x = 344,449,259.06
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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.