Finding the Fourth Proportional to 212,621,865.80, 298,476,827.80 and 212,621,865.80
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Solution
The fourth proportional to 212,621,865.80, 298,476,827.80 and 212,621,865.80 is: 298,476,827.80
Step by Step Solution
- Step 1: Write the proportion equation
212,621,865.80 : 298,476,827.80 = 212,621,865.80 : x - Step 2: Convert to fraction form
212,621,865.80/298,476,827.80 = 212,621,865.80/x - Step 3: Cross multiply
212,621,865.80x = 298,476,827.80 × 212,621,865.80 - Step 4: Simplify right side
212,621,865.80x = 63,462,700,024,901,312 - Step 5: Solve for x
x = 63,462,700,024,901,312/212,621,865.80 - Step 6: Final answer
x = 298,476,827.80
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.