Finding the Fourth Proportional to 423,009.79, 634,481.04 and 170,111.99
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Solution
The fourth proportional to 423,009.79, 634,481.04 and 170,111.99 is: 255,154.45
Step by Step Solution
- Step 1: Write the proportion equation
423,009.79 : 634,481.04 = 170,111.99 : x - Step 2: Convert to fraction form
423,009.79/634,481.04 = 170,111.99/x - Step 3: Cross multiply
423,009.79x = 634,481.04 × 170,111.99 - Step 4: Simplify right side
423,009.79x = 107,932,832,331.67 - Step 5: Solve for x
x = 107,932,832,331.67/423,009.79 - Step 6: Final answer
x = 255,154.45
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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.