Finding the Fourth Proportional to 421,515,178.18, 581,697,832.49 and 230,773,013.13
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Solution
The fourth proportional to 421,515,178.18, 581,697,832.49 and 230,773,013.13 is: 318,470,528.43
Step by Step Solution
- Step 1: Write the proportion equation
421,515,178.18 : 581,697,832.49 = 230,773,013.13 : x - Step 2: Convert to fraction form
421,515,178.18/581,697,832.49 = 230,773,013.13/x - Step 3: Cross multiply
421,515,178.18x = 581,697,832.49 × 230,773,013.13 - Step 4: Simplify right side
421,515,178.18x = 134,240,161,534,907,312 - Step 5: Solve for x
x = 134,240,161,534,907,312/421,515,178.18 - Step 6: Final answer
x = 318,470,528.43
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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.