Finding the Fourth Proportional to 292,643.80, 438,965.70 and 71,027.80
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Solution
The fourth proportional to 292,643.80, 438,965.70 and 71,027.80 is: 106,541.70
Step by Step Solution
- Step 1: Write the proportion equation
292,643.80 : 438,965.70 = 71,027.80 : x - Step 2: Convert to fraction form
292,643.80/438,965.70 = 71,027.80/x - Step 3: Cross multiply
292,643.80x = 438,965.70 × 71,027.80 - Step 4: Simplify right side
292,643.80x = 31,178,767,946.46 - Step 5: Solve for x
x = 31,178,767,946.46/292,643.80 - Step 6: Final answer
x = 106,541.70
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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.