Finding the Fourth Proportional to 289,539,854.70, 399,567,838.64 and 157,380,769.65
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Solution
The fourth proportional to 289,539,854.70, 399,567,838.64 and 157,380,769.65 is: 217,187,005.35
Step by Step Solution
- Step 1: Write the proportion equation
289,539,854.70 : 399,567,838.64 = 157,380,769.65 : x - Step 2: Convert to fraction form
289,539,854.70/399,567,838.64 = 157,380,769.65/x - Step 3: Cross multiply
289,539,854.70x = 399,567,838.64 × 157,380,769.65 - Step 4: Simplify right side
289,539,854.70x = 62,884,293,972,550,208 - Step 5: Solve for x
x = 62,884,293,972,550,208/289,539,854.70 - Step 6: Final answer
x = 217,187,005.35
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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.