Finding the Fourth Proportional to 307,187.01, 423,904.12 and 171,235.80
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Solution
The fourth proportional to 307,187.01, 423,904.12 and 171,235.80 is: 236,297.62
Step by Step Solution
- Step 1: Write the proportion equation
307,187.01 : 423,904.12 = 171,235.80 : x - Step 2: Convert to fraction form
307,187.01/423,904.12 = 171,235.80/x - Step 3: Cross multiply
307,187.01x = 423,904.12 × 171,235.80 - Step 4: Simplify right side
307,187.01x = 72,587,560,683.41 - Step 5: Solve for x
x = 72,587,560,683.41/307,187.01 - Step 6: Final answer
x = 236,297.62
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.