Finding the Fourth Proportional to 390,052.80, 537,912.68 and 299,412.59
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Solution
The fourth proportional to 390,052.80, 537,912.68 and 299,412.59 is: 412,912.88
Step by Step Solution
- Step 1: Write the proportion equation
390,052.80 : 537,912.68 = 299,412.59 : x - Step 2: Convert to fraction form
390,052.80/537,912.68 = 299,412.59/x - Step 3: Cross multiply
390,052.80x = 537,912.68 × 299,412.59 - Step 4: Simplify right side
390,052.80x = 161,057,824,526.02 - Step 5: Solve for x
x = 161,057,824,526.02/390,052.80 - Step 6: Final answer
x = 412,912.88
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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.