Finding the Fourth Proportional to 438,400.36, 657,652.38 and 138,894.76
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Solution
The fourth proportional to 438,400.36, 657,652.38 and 138,894.76 is: 208,358.56
Step by Step Solution
- Step 1: Write the proportion equation
438,400.36 : 657,652.38 = 138,894.76 : x - Step 2: Convert to fraction form
438,400.36/657,652.38 = 138,894.76/x - Step 3: Cross multiply
438,400.36x = 657,652.38 × 138,894.76 - Step 4: Simplify right side
438,400.36x = 91,344,469,483.53 - Step 5: Solve for x
x = 91,344,469,483.53/438,400.36 - Step 6: Final answer
x = 208,358.56
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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.