Finding the Fourth Proportional to 280,748,842.71, 421,330,125.11 and 133,196,939.07
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Solution
The fourth proportional to 280,748,842.71, 421,330,125.11 and 133,196,939.07 is: 199,893,550.62
Step by Step Solution
- Step 1: Write the proportion equation
280,748,842.71 : 421,330,125.11 = 133,196,939.07 : x - Step 2: Convert to fraction form
280,748,842.71/421,330,125.11 = 133,196,939.07/x - Step 3: Cross multiply
280,748,842.71x = 421,330,125.11 × 133,196,939.07 - Step 4: Simplify right side
280,748,842.71x = 56,119,883,001,966,160 - Step 5: Solve for x
x = 56,119,883,001,966,160/280,748,842.71 - Step 6: Final answer
x = 199,893,550.62
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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.