Finding the Fourth Proportional to 316,699.20, 474,642.72 and 129,487.68
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Solution
The fourth proportional to 316,699.20, 474,642.72 and 129,487.68 is: 194,065.49
Step by Step Solution
- Step 1: Write the proportion equation
316,699.20 : 474,642.72 = 129,487.68 : x - Step 2: Convert to fraction form
316,699.20/474,642.72 = 129,487.68/x - Step 3: Cross multiply
316,699.20x = 474,642.72 × 129,487.68 - Step 4: Simplify right side
316,699.20x = 61,460,384,641.69 - Step 5: Solve for x
x = 61,460,384,641.69/316,699.20 - Step 6: Final answer
x = 194,065.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.