Finding the Fourth Proportional to 390,673.44, 539,032.08 and 227,356.80
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Solution
The fourth proportional to 390,673.44, 539,032.08 and 227,356.80 is: 313,695.78
Step by Step Solution
- Step 1: Write the proportion equation
390,673.44 : 539,032.08 = 227,356.80 : x - Step 2: Convert to fraction form
390,673.44/539,032.08 = 227,356.80/x - Step 3: Cross multiply
390,673.44x = 539,032.08 × 227,356.80 - Step 4: Simplify right side
390,673.44x = 122,552,608,806.14 - Step 5: Solve for x
x = 122,552,608,806.14/390,673.44 - Step 6: Final answer
x = 313,695.78
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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.