Finding the Fourth Proportional to 302,768,674.21, 417,820,930.56 and 163,539,435.73
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Solution
The fourth proportional to 302,768,674.21, 417,820,930.56 and 163,539,435.73 is: 225,684,507.81
Step by Step Solution
- Step 1: Write the proportion equation
302,768,674.21 : 417,820,930.56 = 163,539,435.73 : x - Step 2: Convert to fraction form
302,768,674.21/417,820,930.56 = 163,539,435.73/x - Step 3: Cross multiply
302,768,674.21x = 417,820,930.56 × 163,539,435.73 - Step 4: Simplify right side
302,768,674.21x = 68,330,199,219,965,912 - Step 5: Solve for x
x = 68,330,199,219,965,912/302,768,674.21 - Step 6: Final answer
x = 225,684,507.81
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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.