Finding the Fourth Proportional to 398,353.05, 550,426.52 and 318,440.07
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Solution
The fourth proportional to 398,353.05, 550,426.52 and 318,440.07 is: 440,006.32
Step by Step Solution
- Step 1: Write the proportion equation
398,353.05 : 550,426.52 = 318,440.07 : x - Step 2: Convert to fraction form
398,353.05/550,426.52 = 318,440.07/x - Step 3: Cross multiply
398,353.05x = 550,426.52 × 318,440.07 - Step 4: Simplify right side
398,353.05x = 175,277,860,354.76 - Step 5: Solve for x
x = 175,277,860,354.76/398,353.05 - Step 6: Final answer
x = 440,006.32
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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.