Finding the Fourth Proportional to 283,027.52, 390,588.36 and 155,712.80
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Solution
The fourth proportional to 283,027.52, 390,588.36 and 155,712.80 is: 214,889.38
Step by Step Solution
- Step 1: Write the proportion equation
283,027.52 : 390,588.36 = 155,712.80 : x - Step 2: Convert to fraction form
283,027.52/390,588.36 = 155,712.80/x - Step 3: Cross multiply
283,027.52x = 390,588.36 × 155,712.80 - Step 4: Simplify right side
283,027.52x = 60,819,607,183.01 - Step 5: Solve for x
x = 60,819,607,183.01/283,027.52 - Step 6: Final answer
x = 214,889.38
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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.