Finding the Fourth Proportional to 430,286.80, 645,426.08 and 261,854.99
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Solution
The fourth proportional to 430,286.80, 645,426.08 and 261,854.99 is: 392,779.98
Step by Step Solution
- Step 1: Write the proportion equation
430,286.80 : 645,426.08 = 261,854.99 : x - Step 2: Convert to fraction form
430,286.80/645,426.08 = 261,854.99/x - Step 3: Cross multiply
430,286.80x = 645,426.08 × 261,854.99 - Step 4: Simplify right side
430,286.80x = 169,008,038,414.86 - Step 5: Solve for x
x = 169,008,038,414.86/430,286.80 - Step 6: Final answer
x = 392,779.98
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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.