Finding the Fourth Proportional to 211,490.69, 291,926.94 and 189,070.53
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Solution
The fourth proportional to 211,490.69, 291,926.94 and 189,070.53 is: 260,979.72
Step by Step Solution
- Step 1: Write the proportion equation
211,490.69 : 291,926.94 = 189,070.53 : x - Step 2: Convert to fraction form
211,490.69/291,926.94 = 189,070.53/x - Step 3: Cross multiply
211,490.69x = 291,926.94 × 189,070.53 - Step 4: Simplify right side
211,490.69x = 55,194,781,267.08 - Step 5: Solve for x
x = 55,194,781,267.08/211,490.69 - Step 6: Final answer
x = 260,979.72
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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.