Finding the Fourth Proportional to 289,284,912.64, 399,216,109.44 and 157,128,490
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Solution
The fourth proportional to 289,284,912.64, 399,216,109.44 and 157,128,490 is: 216,838,907.66
Step by Step Solution
- Step 1: Write the proportion equation
289,284,912.64 : 399,216,109.44 = 157,128,490 : x - Step 2: Convert to fraction form
289,284,912.64/399,216,109.44 = 157,128,490/x - Step 3: Cross multiply
289,284,912.64x = 399,216,109.44 × 157,128,490 - Step 4: Simplify right side
289,284,912.64x = 62,728,224,459,981,944 - Step 5: Solve for x
x = 62,728,224,459,981,944/289,284,912.64 - Step 6: Final answer
x = 216,838,907.66
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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.