Finding the Fourth Proportional to 369,294,461.40, 509,581,957.44 and 212,712,493.08
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Solution
The fourth proportional to 369,294,461.40, 509,581,957.44 and 212,712,493.08 is: 293,517,666.59
Step by Step Solution
- Step 1: Write the proportion equation
369,294,461.40 : 509,581,957.44 = 212,712,493.08 : x - Step 2: Convert to fraction form
369,294,461.40/509,581,957.44 = 212,712,493.08/x - Step 3: Cross multiply
369,294,461.40x = 509,581,957.44 × 212,712,493.08 - Step 4: Simplify right side
369,294,461.40x = 108,394,448,595,648,864 - Step 5: Solve for x
x = 108,394,448,595,648,864/369,294,461.40 - Step 6: Final answer
x = 293,517,666.59
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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.