Finding the Fourth Proportional to 316,421.24, 474,633.76 and 129,432.74
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Solution
The fourth proportional to 316,421.24, 474,633.76 and 129,432.74 is: 194,149.89
Step by Step Solution
- Step 1: Write the proportion equation
316,421.24 : 474,633.76 = 129,432.74 : x - Step 2: Convert to fraction form
316,421.24/474,633.76 = 129,432.74/x - Step 3: Cross multiply
316,421.24x = 474,633.76 × 129,432.74 - Step 4: Simplify right side
316,421.24x = 61,433,148,053.30 - Step 5: Solve for x
x = 61,433,148,053.30/316,421.24 - Step 6: Final answer
x = 194,149.89
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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.