Finding the Fourth Proportional to 228,597,877.98, 315,473,726.48 and 128,128,155.48
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Solution
The fourth proportional to 228,597,877.98, 315,473,726.48 and 128,128,155.48 is: 176,821,705.58
Step by Step Solution
- Step 1: Write the proportion equation
228,597,877.98 : 315,473,726.48 = 128,128,155.48 : x - Step 2: Convert to fraction form
228,597,877.98/315,473,726.48 = 128,128,155.48/x - Step 3: Cross multiply
228,597,877.98x = 315,473,726.48 × 128,128,155.48 - Step 4: Simplify right side
228,597,877.98x = 40,421,066,676,284,440 - Step 5: Solve for x
x = 40,421,066,676,284,440/228,597,877.98 - Step 6: Final answer
x = 176,821,705.58
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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.