Finding the Fourth Proportional to 215,817,028.96, 297,809,495.76 and 121,725,990.88
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Solution
The fourth proportional to 215,817,028.96, 297,809,495.76 and 121,725,990.88 is: 167,971,712.61
Step by Step Solution
- Step 1: Write the proportion equation
215,817,028.96 : 297,809,495.76 = 121,725,990.88 : x - Step 2: Convert to fraction form
215,817,028.96/297,809,495.76 = 121,725,990.88/x - Step 3: Cross multiply
215,817,028.96x = 297,809,495.76 × 121,725,990.88 - Step 4: Simplify right side
215,817,028.96x = 36,251,155,964,859,160 - Step 5: Solve for x
x = 36,251,155,964,859,160/215,817,028.96 - Step 6: Final answer
x = 167,971,712.61
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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.