Finding the Fourth Proportional to 397,696,899.84, 548,838,753.12 and 221,484,893.28
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Solution
The fourth proportional to 397,696,899.84, 548,838,753.12 and 221,484,893.28 is: 305,658,637.80
Step by Step Solution
- Step 1: Write the proportion equation
397,696,899.84 : 548,838,753.12 = 221,484,893.28 : x - Step 2: Convert to fraction form
397,696,899.84/548,838,753.12 = 221,484,893.28/x - Step 3: Cross multiply
397,696,899.84x = 548,838,753.12 × 221,484,893.28 - Step 4: Simplify right side
397,696,899.84x = 121,559,492,662,711,472 - Step 5: Solve for x
x = 121,559,492,662,711,472/397,696,899.84 - Step 6: Final answer
x = 305,658,637.80
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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.