Finding the Fourth Proportional to 257,378,864.98, 355,353,863.91 and 197,733,933.40
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Solution
The fourth proportional to 257,378,864.98, 355,353,863.91 and 197,733,933.40 is: 273,004,223.81
Step by Step Solution
- Step 1: Write the proportion equation
257,378,864.98 : 355,353,863.91 = 197,733,933.40 : x - Step 2: Convert to fraction form
257,378,864.98/355,353,863.91 = 197,733,933.40/x - Step 3: Cross multiply
257,378,864.98x = 355,353,863.91 × 197,733,933.40 - Step 4: Simplify right side
257,378,864.98x = 70,265,517,257,047,160 - Step 5: Solve for x
x = 70,265,517,257,047,160/257,378,864.98 - Step 6: Final answer
x = 273,004,223.81
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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.