Finding the Fourth Proportional to 390,425.72, 538,579.14 and 237,510.68
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Solution
The fourth proportional to 390,425.72, 538,579.14 and 237,510.68 is: 327,637.99
Step by Step Solution
- Step 1: Write the proportion equation
390,425.72 : 538,579.14 = 237,510.68 : x - Step 2: Convert to fraction form
390,425.72/538,579.14 = 237,510.68/x - Step 3: Cross multiply
390,425.72x = 538,579.14 × 237,510.68 - Step 4: Simplify right side
390,425.72x = 127,918,297,775.22 - Step 5: Solve for x
x = 127,918,297,775.22/390,425.72 - Step 6: Final answer
x = 327,637.99
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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.