Finding the Fourth Proportional to 415,530.18, 623,295.30 and 99,987.12
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Solution
The fourth proportional to 415,530.18, 623,295.30 and 99,987.12 is: 149,980.69
Step by Step Solution
- Step 1: Write the proportion equation
415,530.18 : 623,295.30 = 99,987.12 : x - Step 2: Convert to fraction form
415,530.18/623,295.30 = 99,987.12/x - Step 3: Cross multiply
415,530.18x = 623,295.30 × 99,987.12 - Step 4: Simplify right side
415,530.18x = 62,321,501,956.54 - Step 5: Solve for x
x = 62,321,501,956.54/415,530.18 - Step 6: Final answer
x = 149,980.69
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1.5x scale
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.