Finding the Fourth Proportional to 395,403,040.71, 545,656,188.06 and 219,190,589.55
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Solution
The fourth proportional to 395,403,040.71, 545,656,188.06 and 219,190,589.55 is: 302,483,009.08
Step by Step Solution
- Step 1: Write the proportion equation
395,403,040.71 : 545,656,188.06 = 219,190,589.55 : x - Step 2: Convert to fraction form
395,403,040.71/545,656,188.06 = 219,190,589.55/x - Step 3: Cross multiply
395,403,040.71x = 545,656,188.06 × 219,190,589.55 - Step 4: Simplify right side
395,403,040.71x = 119,602,701,552,477,072 - Step 5: Solve for x
x = 119,602,701,552,477,072/395,403,040.71 - Step 6: Final answer
x = 302,483,009.08
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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.