Finding the Fourth Proportional to 389,221.68, 537,125.94 and 210,373.68
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Solution
The fourth proportional to 389,221.68, 537,125.94 and 210,373.68 is: 290,315.69
Step by Step Solution
- Step 1: Write the proportion equation
389,221.68 : 537,125.94 = 210,373.68 : x - Step 2: Convert to fraction form
389,221.68/537,125.94 = 210,373.68/x - Step 3: Cross multiply
389,221.68x = 537,125.94 × 210,373.68 - Step 4: Simplify right side
389,221.68x = 112,997,160,621.26 - Step 5: Solve for x
x = 112,997,160,621.26/389,221.68 - Step 6: Final answer
x = 290,315.69
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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.