Finding the Fourth Proportional to 406,988.13, 561,643.62 and 228,140.13
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Solution
The fourth proportional to 406,988.13, 561,643.62 and 228,140.13 is: 314,833.38
Step by Step Solution
- Step 1: Write the proportion equation
406,988.13 : 561,643.62 = 228,140.13 : x - Step 2: Convert to fraction form
406,988.13/561,643.62 = 228,140.13/x - Step 3: Cross multiply
406,988.13x = 561,643.62 × 228,140.13 - Step 4: Simplify right side
406,988.13x = 128,133,448,480.47 - Step 5: Solve for x
x = 128,133,448,480.47/406,988.13 - Step 6: Final answer
x = 314,833.38
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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.