Finding the Fourth Proportional to 280,356.19, 420,386.51 and 122,400.12
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Solution
The fourth proportional to 280,356.19, 420,386.51 and 122,400.12 is: 183,535.66
Step by Step Solution
- Step 1: Write the proportion equation
280,356.19 : 420,386.51 = 122,400.12 : x - Step 2: Convert to fraction form
280,356.19/420,386.51 = 122,400.12/x - Step 3: Cross multiply
280,356.19x = 420,386.51 × 122,400.12 - Step 4: Simplify right side
280,356.19x = 51,455,358,788.16 - Step 5: Solve for x
x = 51,455,358,788.16/280,356.19 - Step 6: Final answer
x = 183,535.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.