Finding the Fourth Proportional to 310,930.18, 429,142.40 and 194,697.62
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Solution
The fourth proportional to 310,930.18, 429,142.40 and 194,697.62 is: 268,719.50
Step by Step Solution
- Step 1: Write the proportion equation
310,930.18 : 429,142.40 = 194,697.62 : x - Step 2: Convert to fraction form
310,930.18/429,142.40 = 194,697.62/x - Step 3: Cross multiply
310,930.18x = 429,142.40 × 194,697.62 - Step 4: Simplify right side
310,930.18x = 83,553,003,921.09 - Step 5: Solve for x
x = 83,553,003,921.09/310,930.18 - Step 6: Final answer
x = 268,719.50
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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.