Finding the Fourth Proportional to 371,896.16, 513,214.70 and 210,781.68
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Solution
The fourth proportional to 371,896.16, 513,214.70 and 210,781.68 is: 290,877.58
Step by Step Solution
- Step 1: Write the proportion equation
371,896.16 : 513,214.70 = 210,781.68 : x - Step 2: Convert to fraction form
371,896.16/513,214.70 = 210,781.68/x - Step 3: Cross multiply
371,896.16x = 513,214.70 × 210,781.68 - Step 4: Simplify right side
371,896.16x = 108,176,256,666.70 - Step 5: Solve for x
x = 108,176,256,666.70/371,896.16 - Step 6: Final answer
x = 290,877.58
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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.