Finding the Fourth Proportional to 209,127,090.29, 288,593,789.48 and 115,039,211.95
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Solution
The fourth proportional to 209,127,090.29, 288,593,789.48 and 115,039,211.95 is: 158,753,235.02
Step by Step Solution
- Step 1: Write the proportion equation
209,127,090.29 : 288,593,789.48 = 115,039,211.95 : x - Step 2: Convert to fraction form
209,127,090.29/288,593,789.48 = 115,039,211.95/x - Step 3: Cross multiply
209,127,090.29x = 288,593,789.48 × 115,039,211.95 - Step 4: Simplify right side
209,127,090.29x = 33,199,602,114,000,432 - Step 5: Solve for x
x = 33,199,602,114,000,432/209,127,090.29 - Step 6: Final answer
x = 158,753,235.02
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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.