Finding the Fourth Proportional to 291,712.74, 402,563.57 and 157,576.74
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Solution
The fourth proportional to 291,712.74, 402,563.57 and 157,576.74 is: 217,455.89
Step by Step Solution
- Step 1: Write the proportion equation
291,712.74 : 402,563.57 = 157,576.74 : x - Step 2: Convert to fraction form
291,712.74/402,563.57 = 157,576.74/x - Step 3: Cross multiply
291,712.74x = 402,563.57 × 157,576.74 - Step 4: Simplify right side
291,712.74x = 63,434,654,215.48 - Step 5: Solve for x
x = 63,434,654,215.48/291,712.74 - Step 6: Final answer
x = 217,455.89
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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.