Finding the Fourth Proportional to 398,503.99, 549,549.17 and 253,053.23
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Solution
The fourth proportional to 398,503.99, 549,549.17 and 253,053.23 is: 348,968.12
Step by Step Solution
- Step 1: Write the proportion equation
398,503.99 : 549,549.17 = 253,053.23 : x - Step 2: Convert to fraction form
398,503.99/549,549.17 = 253,053.23/x - Step 3: Cross multiply
398,503.99x = 549,549.17 × 253,053.23 - Step 4: Simplify right side
398,503.99x = 139,065,189,448.26 - Step 5: Solve for x
x = 139,065,189,448.26/398,503.99 - Step 6: Final answer
x = 348,968.12
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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.