Finding the Fourth Proportional to 211,397.13, 291,730.91 and 115,903.62
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Solution
The fourth proportional to 211,397.13, 291,730.91 and 115,903.62 is: 159,948.57
Step by Step Solution
- Step 1: Write the proportion equation
211,397.13 : 291,730.91 = 115,903.62 : x - Step 2: Convert to fraction form
211,397.13/291,730.91 = 115,903.62/x - Step 3: Cross multiply
211,397.13x = 291,730.91 × 115,903.62 - Step 4: Simplify right side
211,397.13x = 33,812,667,955.38 - Step 5: Solve for x
x = 33,812,667,955.38/211,397.13 - Step 6: Final answer
x = 159,948.57
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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.