Finding the Fourth Proportional to 228,647.80, 315,533.58 and 128,045.80
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Solution
The fourth proportional to 228,647.80, 315,533.58 and 128,045.80 is: 176,702.99
Step by Step Solution
- Step 1: Write the proportion equation
228,647.80 : 315,533.58 = 128,045.80 : x - Step 2: Convert to fraction form
228,647.80/315,533.58 = 128,045.80/x - Step 3: Cross multiply
228,647.80x = 315,533.58 × 128,045.80 - Step 4: Simplify right side
228,647.80x = 40,402,749,677.96 - Step 5: Solve for x
x = 40,402,749,677.96/228,647.80 - Step 6: Final answer
x = 176,702.99
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1.5x scale
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.