Finding the Fourth Proportional to 209,236,953.69, 288,786,973.14 and 138,547,883.16
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Solution
The fourth proportional to 209,236,953.69, 288,786,973.14 and 138,547,883.16 is: 191,222,549.88
Step by Step Solution
- Step 1: Write the proportion equation
209,236,953.69 : 288,786,973.14 = 138,547,883.16 : x - Step 2: Convert to fraction form
209,236,953.69/288,786,973.14 = 138,547,883.16/x - Step 3: Cross multiply
209,236,953.69x = 288,786,973.14 × 138,547,883.16 - Step 4: Simplify right side
209,236,953.69x = 40,010,823,812,730,776 - Step 5: Solve for x
x = 40,010,823,812,730,776/209,236,953.69 - Step 6: Final answer
x = 191,222,549.88
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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.