Finding the Fourth Proportional to 315,683.60, 435,652.71 and 172,445.99
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Solution
The fourth proportional to 315,683.60, 435,652.71 and 172,445.99 is: 237,980.57
Step by Step Solution
- Step 1: Write the proportion equation
315,683.60 : 435,652.71 = 172,445.99 : x - Step 2: Convert to fraction form
315,683.60/435,652.71 = 172,445.99/x - Step 3: Cross multiply
315,683.60x = 435,652.71 × 172,445.99 - Step 4: Simplify right side
315,683.60x = 75,126,562,872.13 - Step 5: Solve for x
x = 75,126,562,872.13/315,683.60 - Step 6: Final answer
x = 237,980.57
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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.