Finding the Fourth Proportional to 207,962,276.40, 286,996,908.12 and 115,142,781.36
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Solution
The fourth proportional to 207,962,276.40, 286,996,908.12 and 115,142,781.36 is: 158,902,002.88
Step by Step Solution
- Step 1: Write the proportion equation
207,962,276.40 : 286,996,908.12 = 115,142,781.36 : x - Step 2: Convert to fraction form
207,962,276.40/286,996,908.12 = 115,142,781.36/x - Step 3: Cross multiply
207,962,276.40x = 286,996,908.12 × 115,142,781.36 - Step 4: Simplify right side
207,962,276.40x = 33,045,622,242,657,168 - Step 5: Solve for x
x = 33,045,622,242,657,168/207,962,276.40 - Step 6: Final answer
x = 158,902,002.88
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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.