Finding the Fourth Proportional to 307,306.26, 423,931.86 and 205,356.83
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Solution
The fourth proportional to 307,306.26, 423,931.86 and 205,356.83 is: 283,291.66
Step by Step Solution
- Step 1: Write the proportion equation
307,306.26 : 423,931.86 = 205,356.83 : x - Step 2: Convert to fraction form
307,306.26/423,931.86 = 205,356.83/x - Step 3: Cross multiply
307,306.26x = 423,931.86 × 205,356.83 - Step 4: Simplify right side
307,306.26x = 87,057,300,785.94 - Step 5: Solve for x
x = 87,057,300,785.94/307,306.26 - Step 6: Final answer
x = 283,291.66
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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.