Finding the Fourth Proportional to 156,931.24, 235,394.79 and 38,603.60
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Solution
The fourth proportional to 156,931.24, 235,394.79 and 38,603.60 is: 57,904.89
Step by Step Solution
- Step 1: Write the proportion equation
156,931.24 : 235,394.79 = 38,603.60 : x - Step 2: Convert to fraction form
156,931.24/235,394.79 = 38,603.60/x - Step 3: Cross multiply
156,931.24x = 235,394.79 × 38,603.60 - Step 4: Simplify right side
156,931.24x = 9,087,086,315.24 - Step 5: Solve for x
x = 9,087,086,315.24/156,931.24 - Step 6: Final answer
x = 57,904.89
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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.