Finding the Fourth Proportional to 280,028,716.68, 386,439,699.06 and 154,580,985.48
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Solution
The fourth proportional to 280,028,716.68, 386,439,699.06 and 154,580,985.48 is: 213,321,798.63
Step by Step Solution
- Step 1: Write the proportion equation
280,028,716.68 : 386,439,699.06 = 154,580,985.48 : x - Step 2: Convert to fraction form
280,028,716.68/386,439,699.06 = 154,580,985.48/x - Step 3: Cross multiply
280,028,716.68x = 386,439,699.06 × 154,580,985.48 - Step 4: Simplify right side
280,028,716.68x = 59,736,229,509,289,424 - Step 5: Solve for x
x = 59,736,229,509,289,424/280,028,716.68 - Step 6: Final answer
x = 213,321,798.63
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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.