Finding the Fourth Proportional to 512,335.84, 767,978.70 and 212,990.08
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Solution
The fourth proportional to 512,335.84, 767,978.70 and 212,990.08 is: 319,266.84
Step by Step Solution
- Step 1: Write the proportion equation
512,335.84 : 767,978.70 = 212,990.08 : x - Step 2: Convert to fraction form
512,335.84/767,978.70 = 212,990.08/x - Step 3: Cross multiply
512,335.84x = 767,978.70 × 212,990.08 - Step 4: Simplify right side
512,335.84x = 163,571,844,751.30 - Step 5: Solve for x
x = 163,571,844,751.30/512,335.84 - Step 6: Final answer
x = 319,266.84
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.