Finding the Fourth Proportional to 346,478.60, 478,126.98 and 217,486.64
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Solution
The fourth proportional to 346,478.60, 478,126.98 and 217,486.64 is: 300,123.09
Step by Step Solution
- Step 1: Write the proportion equation
346,478.60 : 478,126.98 = 217,486.64 : x - Step 2: Convert to fraction form
346,478.60/478,126.98 = 217,486.64/x - Step 3: Cross multiply
346,478.60x = 478,126.98 × 217,486.64 - Step 4: Simplify right side
346,478.60x = 103,986,227,982.91 - Step 5: Solve for x
x = 103,986,227,982.91/346,478.60 - Step 6: Final answer
x = 300,123.09
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1.5x scale
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.