Finding the Fourth Proportional to 292,427.70, 438,641.55 and 70,811.70
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Solution
The fourth proportional to 292,427.70, 438,641.55 and 70,811.70 is: 106,217.55
Step by Step Solution
- Step 1: Write the proportion equation
292,427.70 : 438,641.55 = 70,811.70 : x - Step 2: Convert to fraction form
292,427.70/438,641.55 = 70,811.70/x - Step 3: Cross multiply
292,427.70x = 438,641.55 × 70,811.70 - Step 4: Simplify right side
292,427.70x = 31,060,953,846.14 - Step 5: Solve for x
x = 31,060,953,846.14/292,427.70 - Step 6: Final answer
x = 106,217.55
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1.5x scale
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.