Finding the Fourth Proportional to 458,206.62, 687,408.80 and 138,331.95
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Solution
The fourth proportional to 458,206.62, 687,408.80 and 138,331.95 is: 207,527.77
Step by Step Solution
- Step 1: Write the proportion equation
458,206.62 : 687,408.80 = 138,331.95 : x - Step 2: Convert to fraction form
458,206.62/687,408.80 = 138,331.95/x - Step 3: Cross multiply
458,206.62x = 687,408.80 × 138,331.95 - Step 4: Simplify right side
458,206.62x = 95,090,599,751.16 - Step 5: Solve for x
x = 95,090,599,751.16/458,206.62 - Step 6: Final answer
x = 207,527.77
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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.