Finding the Fourth Proportional to 310,513.08, 428,509.74 and 176,381.88
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Solution
The fourth proportional to 310,513.08, 428,509.74 and 176,381.88 is: 243,407.95
Step by Step Solution
- Step 1: Write the proportion equation
310,513.08 : 428,509.74 = 176,381.88 : x - Step 2: Convert to fraction form
310,513.08/428,509.74 = 176,381.88/x - Step 3: Cross multiply
310,513.08x = 428,509.74 × 176,381.88 - Step 4: Simplify right side
310,513.08x = 75,581,353,539.51 - Step 5: Solve for x
x = 75,581,353,539.51/310,513.08 - Step 6: Final answer
x = 243,407.95
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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.