Finding the Fourth Proportional to 316,638.36, 436,985.91 and 180,640.98
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Solution
The fourth proportional to 316,638.36, 436,985.91 and 180,640.98 is: 249,298.80
Step by Step Solution
- Step 1: Write the proportion equation
316,638.36 : 436,985.91 = 180,640.98 : x - Step 2: Convert to fraction form
316,638.36/436,985.91 = 180,640.98/x - Step 3: Cross multiply
316,638.36x = 436,985.91 × 180,640.98 - Step 4: Simplify right side
316,638.36x = 78,937,563,028.59 - Step 5: Solve for x
x = 78,937,563,028.59/316,638.36 - Step 6: Final answer
x = 249,298.80
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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.