Finding the Fourth Proportional to 357,139.62, 492,820.10 and 211,920.38
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Solution
The fourth proportional to 357,139.62, 492,820.10 and 211,920.38 is: 292,430.79
Step by Step Solution
- Step 1: Write the proportion equation
357,139.62 : 492,820.10 = 211,920.38 : x - Step 2: Convert to fraction form
357,139.62/492,820.10 = 211,920.38/x - Step 3: Cross multiply
357,139.62x = 492,820.10 × 211,920.38 - Step 4: Simplify right side
357,139.62x = 104,438,620,399.54 - Step 5: Solve for x
x = 104,438,620,399.54/357,139.62 - Step 6: Final answer
x = 292,430.79
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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.