Finding the Fourth Proportional to 399,110.56, 549,515.28 and 338,555.68
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Solution
The fourth proportional to 399,110.56, 549,515.28 and 338,555.68 is: 466,140.31
Step by Step Solution
- Step 1: Write the proportion equation
399,110.56 : 549,515.28 = 338,555.68 : x - Step 2: Convert to fraction form
399,110.56/549,515.28 = 338,555.68/x - Step 3: Cross multiply
399,110.56x = 549,515.28 × 338,555.68 - Step 4: Simplify right side
399,110.56x = 186,041,519,290.79 - Step 5: Solve for x
x = 186,041,519,290.79/399,110.56 - Step 6: Final answer
x = 466,140.31
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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.