Finding the Fourth Proportional to 420,631.70, 580,468.70 and 229,645.08
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Solution
The fourth proportional to 420,631.70, 580,468.70 and 229,645.08 is: 316,908.55
Step by Step Solution
- Step 1: Write the proportion equation
420,631.70 : 580,468.70 = 229,645.08 : x - Step 2: Convert to fraction form
420,631.70/580,468.70 = 229,645.08/x - Step 3: Cross multiply
420,631.70x = 580,468.70 × 229,645.08 - Step 4: Simplify right side
420,631.70x = 133,301,781,623.11 - Step 5: Solve for x
x = 133,301,781,623.11/420,631.70 - Step 6: Final answer
x = 316,908.55
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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.