Finding the Fourth Proportional to 279,278.42, 384,430.86 and 243,406.13
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Solution
The fourth proportional to 279,278.42, 384,430.86 and 243,406.13 is: 335,052.12
Step by Step Solution
- Step 1: Write the proportion equation
279,278.42 : 384,430.86 = 243,406.13 : x - Step 2: Convert to fraction form
279,278.42/384,430.86 = 243,406.13/x - Step 3: Cross multiply
279,278.42x = 384,430.86 × 243,406.13 - Step 4: Simplify right side
279,278.42x = 93,572,825,963.02 - Step 5: Solve for x
x = 93,572,825,963.02/279,278.42 - Step 6: Final answer
x = 335,052.12
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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.