Finding the Fourth Proportional to 217,240,157.40, 326,238,149.70 and 115,203,485.40
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Solution
The fourth proportional to 217,240,157.40, 326,238,149.70 and 115,203,485.40 is: 173,005,637.47
Step by Step Solution
- Step 1: Write the proportion equation
217,240,157.40 : 326,238,149.70 = 115,203,485.40 : x - Step 2: Convert to fraction form
217,240,157.40/326,238,149.70 = 115,203,485.40/x - Step 3: Cross multiply
217,240,157.40x = 326,238,149.70 × 115,203,485.40 - Step 4: Simplify right side
217,240,157.40x = 37,583,771,915,886,968 - Step 5: Solve for x
x = 37,583,771,915,886,968/217,240,157.40 - Step 6: Final answer
x = 173,005,637.47
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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.