Finding the Fourth Proportional to 390,004.02, 538,205.58 and 220,249.08
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Solution
The fourth proportional to 390,004.02, 538,205.58 and 220,249.08 is: 303,943.75
Step by Step Solution
- Step 1: Write the proportion equation
390,004.02 : 538,205.58 = 220,249.08 : x - Step 2: Convert to fraction form
390,004.02/538,205.58 = 220,249.08/x - Step 3: Cross multiply
390,004.02x = 538,205.58 × 220,249.08 - Step 4: Simplify right side
390,004.02x = 118,539,283,845.87 - Step 5: Solve for x
x = 118,539,283,845.87/390,004.02 - Step 6: Final answer
x = 303,943.75
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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.