Finding the Fourth Proportional to 354,521,207.16, 489,320,895.96 and 207,890,730.36
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Solution
The fourth proportional to 354,521,207.16, 489,320,895.96 and 207,890,730.36 is: 286,937,075.66
Step by Step Solution
- Step 1: Write the proportion equation
354,521,207.16 : 489,320,895.96 = 207,890,730.36 : x - Step 2: Convert to fraction form
354,521,207.16/489,320,895.96 = 207,890,730.36/x - Step 3: Cross multiply
354,521,207.16x = 489,320,895.96 × 207,890,730.36 - Step 4: Simplify right side
354,521,207.16x = 101,725,278,441,533,968 - Step 5: Solve for x
x = 101,725,278,441,533,968/354,521,207.16 - Step 6: Final answer
x = 286,937,075.66
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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.