Finding the Fourth Proportional to 280,903.21, 387,647.08 and 153,587.00
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Solution
The fourth proportional to 280,903.21, 387,647.08 and 153,587.00 is: 211,950.42
Step by Step Solution
- Step 1: Write the proportion equation
280,903.21 : 387,647.08 = 153,587.00 : x - Step 2: Convert to fraction form
280,903.21/387,647.08 = 153,587.00/x - Step 3: Cross multiply
280,903.21x = 387,647.08 × 153,587.00 - Step 4: Simplify right side
280,903.21x = 59,537,552,661.11 - Step 5: Solve for x
x = 59,537,552,661.11/280,903.21 - Step 6: Final answer
x = 211,950.42
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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.