Finding the Fourth Proportional to 430,094,906.12, 645,146,092.78 and 138,962,059.99
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Solution
The fourth proportional to 430,094,906.12, 645,146,092.78 and 138,962,059.99 is: 208,444,296.29
Step by Step Solution
- Step 1: Write the proportion equation
430,094,906.12 : 645,146,092.78 = 138,962,059.99 : x - Step 2: Convert to fraction form
430,094,906.12/645,146,092.78 = 138,962,059.99/x - Step 3: Cross multiply
430,094,906.12x = 645,146,092.78 × 138,962,059.99 - Step 4: Simplify right side
430,094,906.12x = 89,650,830,045,248,208 - Step 5: Solve for x
x = 89,650,830,045,248,208/430,094,906.12 - Step 6: Final answer
x = 208,444,296.29
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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.