Finding the Fourth Proportional to 429,217.99, 643,929.55 and 129,701.55
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Solution
The fourth proportional to 429,217.99, 643,929.55 and 129,701.55 is: 194,583.32
Step by Step Solution
- Step 1: Write the proportion equation
429,217.99 : 643,929.55 = 129,701.55 : x - Step 2: Convert to fraction form
429,217.99/643,929.55 = 129,701.55/x - Step 3: Cross multiply
429,217.99x = 643,929.55 × 129,701.55 - Step 4: Simplify right side
429,217.99x = 83,518,662,816.28 - Step 5: Solve for x
x = 83,518,662,816.28/429,217.99 - Step 6: Final answer
x = 194,583.32
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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.