Finding the Fourth Proportional to 215,476,390.99, 297,358,327.62 and 121,391,666.77
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Solution
The fourth proportional to 215,476,390.99, 297,358,327.62 and 121,391,666.77 is: 167,521,011.71
Step by Step Solution
- Step 1: Write the proportion equation
215,476,390.99 : 297,358,327.62 = 121,391,666.77 : x - Step 2: Convert to fraction form
215,476,390.99/297,358,327.62 = 121,391,666.77/x - Step 3: Cross multiply
215,476,390.99x = 297,358,327.62 × 121,391,666.77 - Step 4: Simplify right side
215,476,390.99x = 36,096,823,017,731,528 - Step 5: Solve for x
x = 36,096,823,017,731,528/215,476,390.99 - Step 6: Final answer
x = 167,521,011.71
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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.