Finding the Fourth Proportional to 256,190,984, 384,326,289.12 and 86,029,709.12
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Solution
The fourth proportional to 256,190,984, 384,326,289.12 and 86,029,709.12 is: 129,057,933.05
Step by Step Solution
- Step 1: Write the proportion equation
256,190,984 : 384,326,289.12 = 86,029,709.12 : x - Step 2: Convert to fraction form
256,190,984/384,326,289.12 = 86,029,709.12/x - Step 3: Cross multiply
256,190,984x = 384,326,289.12 × 86,029,709.12 - Step 4: Simplify right side
256,190,984x = 33,063,478,860,162,624 - Step 5: Solve for x
x = 33,063,478,860,162,624/256,190,984 - Step 6: Final answer
x = 129,057,933.05
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1.5x scale
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.