Finding the Fourth Proportional to 409,124.30, 613,726.11 and 139,442.63
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Solution
The fourth proportional to 409,124.30, 613,726.11 and 139,442.63 is: 209,177.46
Step by Step Solution
- Step 1: Write the proportion equation
409,124.30 : 613,726.11 = 139,442.63 : x - Step 2: Convert to fraction form
409,124.30/613,726.11 = 139,442.63/x - Step 3: Cross multiply
409,124.30x = 613,726.11 × 139,442.63 - Step 4: Simplify right side
409,124.30x = 85,579,579,809.44 - Step 5: Solve for x
x = 85,579,579,809.44/409,124.30 - Step 6: Final answer
x = 209,177.46
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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.