Finding the Fourth Proportional to 285,087,752.19, 393,421,101.12 and 154,707,560.19
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Solution
The fourth proportional to 285,087,752.19, 393,421,101.12 and 154,707,560.19 is: 213,496,434.74
Step by Step Solution
- Step 1: Write the proportion equation
285,087,752.19 : 393,421,101.12 = 154,707,560.19 : x - Step 2: Convert to fraction form
285,087,752.19/393,421,101.12 = 154,707,560.19/x - Step 3: Cross multiply
285,087,752.19x = 393,421,101.12 × 154,707,560.19 - Step 4: Simplify right side
285,087,752.19x = 60,865,218,681,538,480 - Step 5: Solve for x
x = 60,865,218,681,538,480/285,087,752.19 - Step 6: Final answer
x = 213,496,434.74
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1.5x scale
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.