Finding the Fourth Proportional to 221,216,794.80, 305,256,024.84 and 122,095,714.48
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Solution
The fourth proportional to 221,216,794.80, 305,256,024.84 and 122,095,714.48 is: 168,479,307.76
Step by Step Solution
- Step 1: Write the proportion equation
221,216,794.80 : 305,256,024.84 = 122,095,714.48 : x - Step 2: Convert to fraction form
221,216,794.80/305,256,024.84 = 122,095,714.48/x - Step 3: Cross multiply
221,216,794.80x = 305,256,024.84 × 122,095,714.48 - Step 4: Simplify right side
221,216,794.80x = 37,270,452,452,164,424 - Step 5: Solve for x
x = 37,270,452,452,164,424/221,216,794.80 - Step 6: Final answer
x = 168,479,307.76
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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.