Finding the Fourth Proportional to 398,317.50, 549,683.62 and 228,551.63
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Solution
The fourth proportional to 398,317.50, 549,683.62 and 228,551.63 is: 315,404.38
Step by Step Solution
- Step 1: Write the proportion equation
398,317.50 : 549,683.62 = 228,551.63 : x - Step 2: Convert to fraction form
398,317.50/549,683.62 = 228,551.63/x - Step 3: Cross multiply
398,317.50x = 549,683.62 × 228,551.63 - Step 4: Simplify right side
398,317.50x = 125,631,084,015.50 - Step 5: Solve for x
x = 125,631,084,015.50/398,317.50 - Step 6: Final answer
x = 315,404.38
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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.