Finding the Fourth Proportional to 291,645.19, 402,470.40 and 157,509.19
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Solution
The fourth proportional to 291,645.19, 402,470.40 and 157,509.19 is: 217,362.70
Step by Step Solution
- Step 1: Write the proportion equation
291,645.19 : 402,470.40 = 157,509.19 : x - Step 2: Convert to fraction form
291,645.19/402,470.40 = 157,509.19/x - Step 3: Cross multiply
291,645.19x = 402,470.40 × 157,509.19 - Step 4: Simplify right side
291,645.19x = 63,392,786,702.98 - Step 5: Solve for x
x = 63,392,786,702.98/291,645.19 - Step 6: Final answer
x = 217,362.70
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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.