Finding the Fourth Proportional to 211,309.23, 316,847.21 and 86,737.71
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Solution
The fourth proportional to 211,309.23, 316,847.21 and 86,737.71 is: 130,058.69
Step by Step Solution
- Step 1: Write the proportion equation
211,309.23 : 316,847.21 = 86,737.71 : x - Step 2: Convert to fraction form
211,309.23/316,847.21 = 86,737.71/x - Step 3: Cross multiply
211,309.23x = 316,847.21 × 86,737.71 - Step 4: Simplify right side
211,309.23x = 27,482,600,981.60 - Step 5: Solve for x
x = 27,482,600,981.60/211,309.23 - Step 6: Final answer
x = 130,058.69
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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.