Finding the Fourth Proportional to 228,597,781.91, 315,473,594.00 and 128,128,059.68
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Solution
The fourth proportional to 228,597,781.91, 315,473,594.00 and 128,128,059.68 is: 176,821,573.42
Step by Step Solution
- Step 1: Write the proportion equation
228,597,781.91 : 315,473,594.00 = 128,128,059.68 : x - Step 2: Convert to fraction form
228,597,781.91/315,473,594.00 = 128,128,059.68/x - Step 3: Cross multiply
228,597,781.91x = 315,473,594.00 × 128,128,059.68 - Step 4: Simplify right side
228,597,781.91x = 40,421,019,477,278,080 - Step 5: Solve for x
x = 40,421,019,477,278,080/228,597,781.91 - Step 6: Final answer
x = 176,821,573.42
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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.