Finding the Fourth Proportional to 418,992.84, 578,209.05 and 228,006.18
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Solution
The fourth proportional to 418,992.84, 578,209.05 and 228,006.18 is: 314,647.95
Step by Step Solution
- Step 1: Write the proportion equation
418,992.84 : 578,209.05 = 228,006.18 : x - Step 2: Convert to fraction form
418,992.84/578,209.05 = 228,006.18/x - Step 3: Cross multiply
418,992.84x = 578,209.05 × 228,006.18 - Step 4: Simplify right side
418,992.84x = 131,835,236,731.93 - Step 5: Solve for x
x = 131,835,236,731.93/418,992.84 - Step 6: Final answer
x = 314,647.95
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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.