Finding the Fourth Proportional to 478,478.05, 717,693.20 and 178,936.61
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Solution
The fourth proportional to 478,478.05, 717,693.20 and 178,936.61 is: 268,395.99
Step by Step Solution
- Step 1: Write the proportion equation
478,478.05 : 717,693.20 = 178,936.61 : x - Step 2: Convert to fraction form
478,478.05/717,693.20 = 178,936.61/x - Step 3: Cross multiply
478,478.05x = 717,693.20 × 178,936.61 - Step 4: Simplify right side
478,478.05x = 128,421,588,228.05 - Step 5: Solve for x
x = 128,421,588,228.05/478,478.05 - Step 6: Final answer
x = 268,395.99
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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.