Finding the Fourth Proportional to 329,437,732,856.53, 494,347,246,989.85 and 138,192,642,536.58
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Solution
The fourth proportional to 329,437,732,856.53, 494,347,246,989.85 and 138,192,642,536.58 is: 207,368,936,763.42
Step by Step Solution
- Step 1: Write the proportion equation
329,437,732,856.53 : 494,347,246,989.85 = 138,192,642,536.58 : x - Step 2: Convert to fraction form
329,437,732,856.53/494,347,246,989.85 = 138,192,642,536.58/x - Step 3: Cross multiply
329,437,732,856.53x = 494,347,246,989.85 × 138,192,642,536.58 - Step 4: Simplify right side
329,437,732,856.53x = 68,315,152,392,210,752,733,184 - Step 5: Solve for x
x = 68,315,152,392,210,752,733,184/329,437,732,856.53 - Step 6: Final answer
x = 207,368,936,763.42
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1.5x scale
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.