Finding the Fourth Proportional to 284,781.18, 392,963.66 and 157,439.46
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Solution
The fourth proportional to 284,781.18, 392,963.66 and 157,439.46 is: 217,247.45
Step by Step Solution
- Step 1: Write the proportion equation
284,781.18 : 392,963.66 = 157,439.46 : x - Step 2: Convert to fraction form
284,781.18/392,963.66 = 157,439.46/x - Step 3: Cross multiply
284,781.18x = 392,963.66 × 157,439.46 - Step 4: Simplify right side
284,781.18x = 61,867,986,430.02 - Step 5: Solve for x
x = 61,867,986,430.02/284,781.18 - Step 6: Final answer
x = 217,247.45
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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.