Finding the Fourth Proportional to 406,985.63, 561,640.16 and 228,137.63
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Solution
The fourth proportional to 406,985.63, 561,640.16 and 228,137.63 is: 314,829.92
Step by Step Solution
- Step 1: Write the proportion equation
406,985.63 : 561,640.16 = 228,137.63 : x - Step 2: Convert to fraction form
406,985.63/561,640.16 = 228,137.63/x - Step 3: Cross multiply
406,985.63x = 561,640.16 × 228,137.63 - Step 4: Simplify right side
406,985.63x = 128,131,252,777.36 - Step 5: Solve for x
x = 128,131,252,777.36/406,985.63 - Step 6: Final answer
x = 314,829.92
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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.