Finding the Fourth Proportional to 355,236,649.25, 490,201,689.64 and 206,547,221.53
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Solution
The fourth proportional to 355,236,649.25, 490,201,689.64 and 206,547,221.53 is: 285,020,695.91
Step by Step Solution
- Step 1: Write the proportion equation
355,236,649.25 : 490,201,689.64 = 206,547,221.53 : x - Step 2: Convert to fraction form
355,236,649.25/490,201,689.64 = 206,547,221.53/x - Step 3: Cross multiply
355,236,649.25x = 490,201,689.64 × 206,547,221.53 - Step 4: Simplify right side
355,236,649.25x = 101,249,796,983,420,656 - Step 5: Solve for x
x = 101,249,796,983,420,656/355,236,649.25 - Step 6: Final answer
x = 285,020,695.91
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.