Finding the Fourth Proportional to 320,427.55, 442,188.88 and 180,715.06
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Solution
The fourth proportional to 320,427.55, 442,188.88 and 180,715.06 is: 249,386.14
Step by Step Solution
- Step 1: Write the proportion equation
320,427.55 : 442,188.88 = 180,715.06 : x - Step 2: Convert to fraction form
320,427.55/442,188.88 = 180,715.06/x - Step 3: Cross multiply
320,427.55x = 442,188.88 × 180,715.06 - Step 4: Simplify right side
320,427.55x = 79,910,189,980.53 - Step 5: Solve for x
x = 79,910,189,980.53/320,427.55 - Step 6: Final answer
x = 249,386.14
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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.