Finding the Fourth Proportional to 289,291,619.45, 399,225,669.99 and 170,240,531.68
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Solution
The fourth proportional to 289,291,619.45, 399,225,669.99 and 170,240,531.68 is: 234,933,837.52
Step by Step Solution
- Step 1: Write the proportion equation
289,291,619.45 : 399,225,669.99 = 170,240,531.68 : x - Step 2: Convert to fraction form
289,291,619.45/399,225,669.99 = 170,240,531.68/x - Step 3: Cross multiply
289,291,619.45x = 399,225,669.99 × 170,240,531.68 - Step 4: Simplify right side
289,291,619.45x = 67,964,390,320,631,712 - Step 5: Solve for x
x = 67,964,390,320,631,712/289,291,619.45 - Step 6: Final answer
x = 234,933,837.52
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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.