Finding the Fourth Proportional to 458,146.59, 687,318.60 and 138,271.68
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Solution
The fourth proportional to 458,146.59, 687,318.60 and 138,271.68 is: 207,437.31
Step by Step Solution
- Step 1: Write the proportion equation
458,146.59 : 687,318.60 = 138,271.68 : x - Step 2: Convert to fraction form
458,146.59/687,318.60 = 138,271.68/x - Step 3: Cross multiply
458,146.59x = 687,318.60 × 138,271.68 - Step 4: Simplify right side
458,146.59x = 95,036,697,517.25 - Step 5: Solve for x
x = 95,036,697,517.25/458,146.59 - Step 6: Final answer
x = 207,437.31
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.