Finding the Fourth Proportional to 216,887,217.98, 299,312,942.78 and 121,518,549.41
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Solution
The fourth proportional to 216,887,217.98, 299,312,942.78 and 121,518,549.41 is: 167,700,406.53
Step by Step Solution
- Step 1: Write the proportion equation
216,887,217.98 : 299,312,942.78 = 121,518,549.41 : x - Step 2: Convert to fraction form
216,887,217.98/299,312,942.78 = 121,518,549.41/x - Step 3: Cross multiply
216,887,217.98x = 299,312,942.78 × 121,518,549.41 - Step 4: Simplify right side
216,887,217.98x = 36,372,074,625,071,168 - Step 5: Solve for x
x = 36,372,074,625,071,168/216,887,217.98 - Step 6: Final answer
x = 167,700,406.53
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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.