Finding the Fourth Proportional to 313,478.79, 432,733.10 and 211,642.14
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Solution
The fourth proportional to 313,478.79, 432,733.10 and 211,642.14 is: 292,155.52
Step by Step Solution
- Step 1: Write the proportion equation
313,478.79 : 432,733.10 = 211,642.14 : x - Step 2: Convert to fraction form
313,478.79/432,733.10 = 211,642.14/x - Step 3: Cross multiply
313,478.79x = 432,733.10 × 211,642.14 - Step 4: Simplify right side
313,478.79x = 91,584,559,332.83 - Step 5: Solve for x
x = 91,584,559,332.83/313,478.79 - Step 6: Final answer
x = 292,155.52
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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.