Finding the Fourth Proportional to 206,602,682.40, 285,142,698.36 and 156,961,369.08
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Solution
The fourth proportional to 206,602,682.40, 285,142,698.36 and 156,961,369.08 is: 216,630,238.28
Step by Step Solution
- Step 1: Write the proportion equation
206,602,682.40 : 285,142,698.36 = 156,961,369.08 : x - Step 2: Convert to fraction form
206,602,682.40/285,142,698.36 = 156,961,369.08/x - Step 3: Cross multiply
206,602,682.40x = 285,142,698.36 × 156,961,369.08 - Step 4: Simplify right side
206,602,682.40x = 44,756,388,317,751,080 - Step 5: Solve for x
x = 44,756,388,317,751,080/206,602,682.40 - Step 6: Final answer
x = 216,630,238.28
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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.