Finding the Fourth Proportional to 328,860.90, 493,099.92 and 128,946.96
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Solution
The fourth proportional to 328,860.90, 493,099.92 and 128,946.96 is: 193,345.38
Step by Step Solution
- Step 1: Write the proportion equation
328,860.90 : 493,099.92 = 128,946.96 : x - Step 2: Convert to fraction form
328,860.90/493,099.92 = 128,946.96/x - Step 3: Cross multiply
328,860.90x = 493,099.92 × 128,946.96 - Step 4: Simplify right side
328,860.90x = 63,583,735,660.24 - Step 5: Solve for x
x = 63,583,735,660.24/328,860.90 - Step 6: Final answer
x = 193,345.38
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1.5x scale
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.