Finding the Fourth Proportional to 343,213.80, 514,820.70 and 319,885.80
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Solution
The fourth proportional to 343,213.80, 514,820.70 and 319,885.80 is: 479,828.70
Step by Step Solution
- Step 1: Write the proportion equation
343,213.80 : 514,820.70 = 319,885.80 : x - Step 2: Convert to fraction form
343,213.80/514,820.70 = 319,885.80/x - Step 3: Cross multiply
343,213.80x = 514,820.70 × 319,885.80 - Step 4: Simplify right side
343,213.80x = 164,683,831,476.06 - Step 5: Solve for x
x = 164,683,831,476.06/343,213.80 - Step 6: Final answer
x = 479,828.70
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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.