Finding the Fourth Proportional to 346,455.75, 478,110.39 and 187,479.75
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Solution
The fourth proportional to 346,455.75, 478,110.39 and 187,479.75 is: 258,722.84
Step by Step Solution
- Step 1: Write the proportion equation
346,455.75 : 478,110.39 = 187,479.75 : x - Step 2: Convert to fraction form
346,455.75/478,110.39 = 187,479.75/x - Step 3: Cross multiply
346,455.75x = 478,110.39 × 187,479.75 - Step 4: Simplify right side
346,455.75x = 89,636,016,389.60 - Step 5: Solve for x
x = 89,636,016,389.60/346,455.75 - Step 6: Final answer
x = 258,722.84
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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.