Finding the Fourth Proportional to 420,312.69, 580,031.42 and 229,326.84
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Solution
The fourth proportional to 420,312.69, 580,031.42 and 229,326.84 is: 316,470.99
Step by Step Solution
- Step 1: Write the proportion equation
420,312.69 : 580,031.42 = 229,326.84 : x - Step 2: Convert to fraction form
420,312.69/580,031.42 = 229,326.84/x - Step 3: Cross multiply
420,312.69x = 580,031.42 × 229,326.84 - Step 4: Simplify right side
420,312.69x = 133,016,771,502.68 - Step 5: Solve for x
x = 133,016,771,502.68/420,312.69 - Step 6: Final answer
x = 316,470.99
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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.