Finding the Fourth Proportional to 440,421.13, 607,781.76 and 239,217.13
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Solution
The fourth proportional to 440,421.13, 607,781.76 and 239,217.13 is: 330,119.96
Step by Step Solution
- Step 1: Write the proportion equation
440,421.13 : 607,781.76 = 239,217.13 : x - Step 2: Convert to fraction form
440,421.13/607,781.76 = 239,217.13/x - Step 3: Cross multiply
440,421.13x = 607,781.76 × 239,217.13 - Step 4: Simplify right side
440,421.13x = 145,391,805,254.64 - Step 5: Solve for x
x = 145,391,805,254.64/440,421.13 - Step 6: Final answer
x = 330,119.96
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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.