Finding the Fourth Proportional to 391,110.71, 539,732.99 and 212,262.71
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Solution
The fourth proportional to 391,110.71, 539,732.99 and 212,262.71 is: 292,922.65
Step by Step Solution
- Step 1: Write the proportion equation
391,110.71 : 539,732.99 = 212,262.71 : x - Step 2: Convert to fraction form
391,110.71/539,732.99 = 212,262.71/x - Step 3: Cross multiply
391,110.71x = 539,732.99 × 212,262.71 - Step 4: Simplify right side
391,110.71x = 114,565,184,965.80 - Step 5: Solve for x
x = 114,565,184,965.80/391,110.71 - Step 6: Final answer
x = 292,922.65
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1.5x scale
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.