Finding the Fourth Proportional to 369,072,890.70, 553,609,336.05 and 215,639,969.10
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Solution
The fourth proportional to 369,072,890.70, 553,609,336.05 and 215,639,969.10 is: 323,459,953.65
Step by Step Solution
- Step 1: Write the proportion equation
369,072,890.70 : 553,609,336.05 = 215,639,969.10 : x - Step 2: Convert to fraction form
369,072,890.70/553,609,336.05 = 215,639,969.10/x - Step 3: Cross multiply
369,072,890.70x = 553,609,336.05 × 215,639,969.10 - Step 4: Simplify right side
369,072,890.70x = 119,380,300,119,293,504 - Step 5: Solve for x
x = 119,380,300,119,293,504/369,072,890.70 - Step 6: Final answer
x = 323,459,953.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.