Finding the Fourth Proportional to 217,386,958.92, 299,995,307.88 and 118,268,417.32
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Solution
The fourth proportional to 217,386,958.92, 299,995,307.88 and 118,268,417.32 is: 163,211,125.65
Step by Step Solution
- Step 1: Write the proportion equation
217,386,958.92 : 299,995,307.88 = 118,268,417.32 : x - Step 2: Convert to fraction form
217,386,958.92/299,995,307.88 = 118,268,417.32/x - Step 3: Cross multiply
217,386,958.92x = 299,995,307.88 × 118,268,417.32 - Step 4: Simplify right side
217,386,958.92x = 35,479,970,266,393,720 - Step 5: Solve for x
x = 35,479,970,266,393,720/217,386,958.92 - Step 6: Final answer
x = 163,211,125.65
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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.