Finding the Fourth Proportional to 428,129.40, 590,829.12 and 234,547.68
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Solution
The fourth proportional to 428,129.40, 590,829.12 and 234,547.68 is: 323,681.58
Step by Step Solution
- Step 1: Write the proportion equation
428,129.40 : 590,829.12 = 234,547.68 : x - Step 2: Convert to fraction form
428,129.40/590,829.12 = 234,547.68/x - Step 3: Cross multiply
428,129.40x = 590,829.12 × 234,547.68 - Step 4: Simplify right side
428,129.40x = 138,577,599,372.44 - Step 5: Solve for x
x = 138,577,599,372.44/428,129.40 - Step 6: Final answer
x = 323,681.58
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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.