Finding the Fourth Proportional to 319,538,765.40, 478,977,473.70 and 173,664,115.80
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Solution
The fourth proportional to 319,538,765.40, 478,977,473.70 and 173,664,115.80 is: 260,316,457.55
Step by Step Solution
- Step 1: Write the proportion equation
319,538,765.40 : 478,977,473.70 = 173,664,115.80 : x - Step 2: Convert to fraction form
319,538,765.40/478,977,473.70 = 173,664,115.80/x - Step 3: Cross multiply
319,538,765.40x = 478,977,473.70 × 173,664,115.80 - Step 4: Simplify right side
319,538,765.40x = 83,181,199,458,228,256 - Step 5: Solve for x
x = 83,181,199,458,228,256/319,538,765.40 - Step 6: Final answer
x = 260,316,457.55
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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.