Finding the Fourth Proportional to 407,971,051.88, 612,137,292.10 and 213,836,330.12
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Solution
The fourth proportional to 407,971,051.88, 612,137,292.10 and 213,836,330.12 is: 320,849,215.82
Step by Step Solution
- Step 1: Write the proportion equation
407,971,051.88 : 612,137,292.10 = 213,836,330.12 : x - Step 2: Convert to fraction form
407,971,051.88/612,137,292.10 = 213,836,330.12/x - Step 3: Cross multiply
407,971,051.88x = 612,137,292.10 × 213,836,330.12 - Step 4: Simplify right side
407,971,051.88x = 130,897,192,072,258,480 - Step 5: Solve for x
x = 130,897,192,072,258,480/407,971,051.88 - Step 6: Final answer
x = 320,849,215.82
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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.