Finding the Fourth Proportional to 199,706,427.20, 299,559,640.80 and 84,671,393.60
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Solution
The fourth proportional to 199,706,427.20, 299,559,640.80 and 84,671,393.60 is: 127,007,090.40
Step by Step Solution
- Step 1: Write the proportion equation
199,706,427.20 : 299,559,640.80 = 84,671,393.60 : x - Step 2: Convert to fraction form
199,706,427.20/299,559,640.80 = 84,671,393.60/x - Step 3: Cross multiply
199,706,427.20x = 299,559,640.80 × 84,671,393.60 - Step 4: Simplify right side
199,706,427.20x = 25,364,132,252,851,420 - Step 5: Solve for x
x = 25,364,132,252,851,420/199,706,427.20 - Step 6: Final answer
x = 127,007,090.40
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.