Finding the Fourth Proportional to 318,632.42, 478,280.76 and 141,263.99
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Solution
The fourth proportional to 318,632.42, 478,280.76 and 141,263.99 is: 212,043.23
Step by Step Solution
- Step 1: Write the proportion equation
318,632.42 : 478,280.76 = 141,263.99 : x - Step 2: Convert to fraction form
318,632.42/478,280.76 = 141,263.99/x - Step 3: Cross multiply
318,632.42x = 478,280.76 × 141,263.99 - Step 4: Simplify right side
318,632.42x = 67,563,846,106.43 - Step 5: Solve for x
x = 67,563,846,106.43/318,632.42 - Step 6: Final answer
x = 212,043.23
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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.