Finding the Fourth Proportional to 342,349.12, 513,329.28 and 286,536.88
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Solution
The fourth proportional to 342,349.12, 513,329.28 and 286,536.88 is: 429,642.61
Step by Step Solution
- Step 1: Write the proportion equation
342,349.12 : 513,329.28 = 286,536.88 : x - Step 2: Convert to fraction form
342,349.12/513,329.28 = 286,536.88/x - Step 3: Cross multiply
342,349.12x = 513,329.28 × 286,536.88 - Step 4: Simplify right side
342,349.12x = 147,087,770,303.85 - Step 5: Solve for x
x = 147,087,770,303.85/342,349.12 - Step 6: Final answer
x = 429,642.61
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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.