Finding the Fourth Proportional to 221,364,347.76, 305,479,611.12 and 122,249,289
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Solution
The fourth proportional to 221,364,347.76, 305,479,611.12 and 122,249,289 is: 168,702,257.80
Step by Step Solution
- Step 1: Write the proportion equation
221,364,347.76 : 305,479,611.12 = 122,249,289 : x - Step 2: Convert to fraction form
221,364,347.76/305,479,611.12 = 122,249,289/x - Step 3: Cross multiply
221,364,347.76x = 305,479,611.12 × 122,249,289 - Step 4: Simplify right side
221,364,347.76x = 37,344,665,263,416,496 - Step 5: Solve for x
x = 37,344,665,263,416,496/221,364,347.76 - Step 6: Final answer
x = 168,702,257.80
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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.