Finding the Fourth Proportional to 258,374.10, 387,536.08 and 78,461.08
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Solution
The fourth proportional to 258,374.10, 387,536.08 and 78,461.08 is: 117,684.00
Step by Step Solution
- Step 1: Write the proportion equation
258,374.10 : 387,536.08 = 78,461.08 : x - Step 2: Convert to fraction form
258,374.10/387,536.08 = 78,461.08/x - Step 3: Cross multiply
258,374.10x = 387,536.08 × 78,461.08 - Step 4: Simplify right side
258,374.10x = 30,406,497,045.78 - Step 5: Solve for x
x = 30,406,497,045.78/258,374.10 - Step 6: Final answer
x = 117,684.00
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.