Finding the Fourth Proportional to 286,211.70, 394,973.91 and 157,155.75
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Solution
The fourth proportional to 286,211.70, 394,973.91 and 157,155.75 is: 216,875.90
Step by Step Solution
- Step 1: Write the proportion equation
286,211.70 : 394,973.91 = 157,155.75 : x - Step 2: Convert to fraction form
286,211.70/394,973.91 = 157,155.75/x - Step 3: Cross multiply
286,211.70x = 394,973.91 × 157,155.75 - Step 4: Simplify right side
286,211.70x = 62,072,421,056.48 - Step 5: Solve for x
x = 62,072,421,056.48/286,211.70 - Step 6: Final answer
x = 216,875.90
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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.