Finding the Fourth Proportional to 280,386.36, 386,933.76 and 153,064.08
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Solution
The fourth proportional to 280,386.36, 386,933.76 and 153,064.08 is: 211,228.75
Step by Step Solution
- Step 1: Write the proportion equation
280,386.36 : 386,933.76 = 153,064.08 : x - Step 2: Convert to fraction form
280,386.36/386,933.76 = 153,064.08/x - Step 3: Cross multiply
280,386.36x = 386,933.76 × 153,064.08 - Step 4: Simplify right side
280,386.36x = 59,225,659,995.34 - Step 5: Solve for x
x = 59,225,659,995.34/280,386.36 - Step 6: Final answer
x = 211,228.75
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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.