Finding the Fourth Proportional to 385,454.36, 578,137.74 and 148,776.68
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Solution
The fourth proportional to 385,454.36, 578,137.74 and 148,776.68 is: 223,148.11
Step by Step Solution
- Step 1: Write the proportion equation
385,454.36 : 578,137.74 = 148,776.68 : x - Step 2: Convert to fraction form
385,454.36/578,137.74 = 148,776.68/x - Step 3: Cross multiply
385,454.36x = 578,137.74 × 148,776.68 - Step 4: Simplify right side
385,454.36x = 86,013,413,539.90 - Step 5: Solve for x
x = 86,013,413,539.90/385,454.36 - Step 6: Final answer
x = 223,148.11
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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.