Finding the Fourth Proportional to 432,432.80, 648,711.20 and 132,938.49
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Solution
The fourth proportional to 432,432.80, 648,711.20 and 132,938.49 is: 199,426.80
Step by Step Solution
- Step 1: Write the proportion equation
432,432.80 : 648,711.20 = 132,938.49 : x - Step 2: Convert to fraction form
432,432.80/648,711.20 = 132,938.49/x - Step 3: Cross multiply
432,432.80x = 648,711.20 × 132,938.49 - Step 4: Simplify right side
432,432.80x = 86,238,687,374.09 - Step 5: Solve for x
x = 86,238,687,374.09/432,432.80 - Step 6: Final answer
x = 199,426.80
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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.