Finding the Fourth Proportional to 291,919.70, 402,849.18 and 157,783.70
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Solution
The fourth proportional to 291,919.70, 402,849.18 and 157,783.70 is: 217,741.50
Step by Step Solution
- Step 1: Write the proportion equation
291,919.70 : 402,849.18 = 157,783.70 : x - Step 2: Convert to fraction form
291,919.70/402,849.18 = 157,783.70/x - Step 3: Cross multiply
291,919.70x = 402,849.18 × 157,783.70 - Step 4: Simplify right side
291,919.70x = 63,563,032,148.12 - Step 5: Solve for x
x = 63,563,032,148.12/291,919.70 - Step 6: Final answer
x = 217,741.50
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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.