Finding the Fourth Proportional to 210,903.62, 291,039.93 and 115,403.90
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Solution
The fourth proportional to 210,903.62, 291,039.93 and 115,403.90 is: 159,253.52
Step by Step Solution
- Step 1: Write the proportion equation
210,903.62 : 291,039.93 = 115,403.90 : x - Step 2: Convert to fraction form
210,903.62/291,039.93 = 115,403.90/x - Step 3: Cross multiply
210,903.62x = 291,039.93 × 115,403.90 - Step 4: Simplify right side
210,903.62x = 33,587,142,977.73 - Step 5: Solve for x
x = 33,587,142,977.73/210,903.62 - Step 6: Final answer
x = 159,253.52
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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.