Finding the Fourth Proportional to 261,749,257.20, 392,623,885.80 and 221,438,473.20
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Solution
The fourth proportional to 261,749,257.20, 392,623,885.80 and 221,438,473.20 is: 332,157,709.80
Step by Step Solution
- Step 1: Write the proportion equation
261,749,257.20 : 392,623,885.80 = 221,438,473.20 : x - Step 2: Convert to fraction form
261,749,257.20/392,623,885.80 = 221,438,473.20/x - Step 3: Cross multiply
261,749,257.20x = 392,623,885.80 × 221,438,473.20 - Step 4: Simplify right side
261,749,257.20x = 86,942,033,813,403,152 - Step 5: Solve for x
x = 86,942,033,813,403,152/261,749,257.20 - Step 6: Final answer
x = 332,157,709.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.