Finding the Fourth Proportional to 395,282,890.41, 545,490,377.93 and 219,097,355.75
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Solution
The fourth proportional to 395,282,890.41, 545,490,377.93 and 219,097,355.75 is: 302,354,344.92
Step by Step Solution
- Step 1: Write the proportion equation
395,282,890.41 : 545,490,377.93 = 219,097,355.75 : x - Step 2: Convert to fraction form
395,282,890.41/545,490,377.93 = 219,097,355.75/x - Step 3: Cross multiply
395,282,890.41x = 545,490,377.93 × 219,097,355.75 - Step 4: Simplify right side
395,282,890.41x = 119,515,499,387,708,208 - Step 5: Solve for x
x = 119,515,499,387,708,208/395,282,890.41 - Step 6: Final answer
x = 302,354,344.92
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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.