Finding the Fourth Proportional to 259,790,415.76, 358,509,718.74 and 142,315,579.54
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Solution
The fourth proportional to 259,790,415.76, 358,509,718.74 and 142,315,579.54 is: 196,394,921.82
Step by Step Solution
- Step 1: Write the proportion equation
259,790,415.76 : 358,509,718.74 = 142,315,579.54 : x - Step 2: Convert to fraction form
259,790,415.76/358,509,718.74 = 142,315,579.54/x - Step 3: Cross multiply
259,790,415.76x = 358,509,718.74 × 142,315,579.54 - Step 4: Simplify right side
259,790,415.76x = 51,021,518,393,205,496 - Step 5: Solve for x
x = 51,021,518,393,205,496/259,790,415.76 - Step 6: Final answer
x = 196,394,921.82
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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.