Finding the Fourth Proportional to 260,776,138.10, 391,164,207.15 and 157,464,007.70
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Solution
The fourth proportional to 260,776,138.10, 391,164,207.15 and 157,464,007.70 is: 236,196,011.55
Step by Step Solution
- Step 1: Write the proportion equation
260,776,138.10 : 391,164,207.15 = 157,464,007.70 : x - Step 2: Convert to fraction form
260,776,138.10/391,164,207.15 = 157,464,007.70/x - Step 3: Cross multiply
260,776,138.10x = 391,164,207.15 × 157,464,007.70 - Step 4: Simplify right side
260,776,138.10x = 61,594,283,726,631,984 - Step 5: Solve for x
x = 61,594,283,726,631,984/260,776,138.10 - Step 6: Final answer
x = 236,196,011.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.