Finding the Fourth Proportional to 361,189,809.68, 498,356,549.88 and 212,517,420.08
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Solution
The fourth proportional to 361,189,809.68, 498,356,549.88 and 212,517,420.08 is: 293,223,799.29
Step by Step Solution
- Step 1: Write the proportion equation
361,189,809.68 : 498,356,549.88 = 212,517,420.08 : x - Step 2: Convert to fraction form
361,189,809.68/498,356,549.88 = 212,517,420.08/x - Step 3: Cross multiply
361,189,809.68x = 498,356,549.88 × 212,517,420.08 - Step 4: Simplify right side
361,189,809.68x = 105,909,448,260,467,440 - Step 5: Solve for x
x = 105,909,448,260,467,440/361,189,809.68 - Step 6: Final answer
x = 293,223,799.29
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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.