Finding the Fourth Proportional to 199,417.10, 299,125.65 and 128,558.30
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Solution
The fourth proportional to 199,417.10, 299,125.65 and 128,558.30 is: 192,837.45
Step by Step Solution
- Step 1: Write the proportion equation
199,417.10 : 299,125.65 = 128,558.30 : x - Step 2: Convert to fraction form
199,417.10/299,125.65 = 128,558.30/x - Step 3: Cross multiply
199,417.10x = 299,125.65 × 128,558.30 - Step 4: Simplify right side
199,417.10x = 38,455,085,050.40 - Step 5: Solve for x
x = 38,455,085,050.40/199,417.10 - Step 6: Final answer
x = 192,837.45
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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.