Finding the Fourth Proportional to 387,416.40, 581,032.08 and 162,781.08
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Solution
The fourth proportional to 387,416.40, 581,032.08 and 162,781.08 is: 244,132.75
Step by Step Solution
- Step 1: Write the proportion equation
387,416.40 : 581,032.08 = 162,781.08 : x - Step 2: Convert to fraction form
387,416.40/581,032.08 = 162,781.08/x - Step 3: Cross multiply
387,416.40x = 581,032.08 × 162,781.08 - Step 4: Simplify right side
387,416.40x = 94,581,029,497.05 - Step 5: Solve for x
x = 94,581,029,497.05/387,416.40 - Step 6: Final answer
x = 244,132.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.