Finding the Fourth Proportional to 318,813.92, 439,964.48 and 191,491.68
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Solution
The fourth proportional to 318,813.92, 439,964.48 and 191,491.68 is: 264,259.28
Step by Step Solution
- Step 1: Write the proportion equation
318,813.92 : 439,964.48 = 191,491.68 : x - Step 2: Convert to fraction form
318,813.92/439,964.48 = 191,491.68/x - Step 3: Cross multiply
318,813.92x = 439,964.48 × 191,491.68 - Step 4: Simplify right side
318,813.92x = 84,249,537,415.53 - Step 5: Solve for x
x = 84,249,537,415.53/318,813.92 - Step 6: Final answer
x = 264,259.28
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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.