Finding the Fourth Proportional to 392,726.35, 542,281.95 and 320,140.63
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Solution
The fourth proportional to 392,726.35, 542,281.95 and 320,140.63 is: 442,054.59
Step by Step Solution
- Step 1: Write the proportion equation
392,726.35 : 542,281.95 = 320,140.63 : x - Step 2: Convert to fraction form
392,726.35/542,281.95 = 320,140.63/x - Step 3: Cross multiply
392,726.35x = 542,281.95 × 320,140.63 - Step 4: Simplify right side
392,726.35x = 173,606,485,110.63 - Step 5: Solve for x
x = 173,606,485,110.63/392,726.35 - Step 6: Final answer
x = 442,054.59
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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.