Finding the Fourth Proportional to 279,987.81, 386,373.55 and 159,126.99
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Solution
The fourth proportional to 279,987.81, 386,373.55 and 159,126.99 is: 219,589.77
Step by Step Solution
- Step 1: Write the proportion equation
279,987.81 : 386,373.55 = 159,126.99 : x - Step 2: Convert to fraction form
279,987.81/386,373.55 = 159,126.99/x - Step 3: Cross multiply
279,987.81x = 386,373.55 × 159,126.99 - Step 4: Simplify right side
279,987.81x = 61,482,460,027.11 - Step 5: Solve for x
x = 61,482,460,027.11/279,987.81 - Step 6: Final answer
x = 219,589.77
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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.