Finding the Fourth Proportional to 385,730.20, 578,681.70 and 149,051.80
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Solution
The fourth proportional to 385,730.20, 578,681.70 and 149,051.80 is: 223,611.09
Step by Step Solution
- Step 1: Write the proportion equation
385,730.20 : 578,681.70 = 149,051.80 : x - Step 2: Convert to fraction form
385,730.20/578,681.70 = 149,051.80/x - Step 3: Cross multiply
385,730.20x = 578,681.70 × 149,051.80 - Step 4: Simplify right side
385,730.20x = 86,253,549,012.06 - Step 5: Solve for x
x = 86,253,549,012.06/385,730.20 - Step 6: Final answer
x = 223,611.09
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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.