Finding the Fourth Proportional to 391,356.68, 539,833.50 and 258,749.03
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Solution
The fourth proportional to 391,356.68, 539,833.50 and 258,749.03 is: 356,915.84
Step by Step Solution
- Step 1: Write the proportion equation
391,356.68 : 539,833.50 = 258,749.03 : x - Step 2: Convert to fraction form
391,356.68/539,833.50 = 258,749.03/x - Step 3: Cross multiply
391,356.68x = 539,833.50 × 258,749.03 - Step 4: Simplify right side
391,356.68x = 139,681,395,836.09 - Step 5: Solve for x
x = 139,681,395,836.09/391,356.68 - Step 6: Final answer
x = 356,915.84
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.