Finding the Fourth Proportional to 371,902,886.91, 513,210,596.65 and 202,357,822.49
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Solution
The fourth proportional to 371,902,886.91, 513,210,596.65 and 202,357,822.49 is: 279,245,422.59
Step by Step Solution
- Step 1: Write the proportion equation
371,902,886.91 : 513,210,596.65 = 202,357,822.49 : x - Step 2: Convert to fraction form
371,902,886.91/513,210,596.65 = 202,357,822.49/x - Step 3: Cross multiply
371,902,886.91x = 513,210,596.65 × 202,357,822.49 - Step 4: Simplify right side
371,902,886.91x = 103,852,178,816,887,696 - Step 5: Solve for x
x = 103,852,178,816,887,696/371,902,886.91 - Step 6: Final answer
x = 279,245,422.59
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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.