Finding the Fourth Proportional to 256,014,631.71, 353,301,121.98 and 138,539,948.58
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Solution
The fourth proportional to 256,014,631.71, 353,301,121.98 and 138,539,948.58 is: 191,185,632.42
Step by Step Solution
- Step 1: Write the proportion equation
256,014,631.71 : 353,301,121.98 = 138,539,948.58 : x - Step 2: Convert to fraction form
256,014,631.71/353,301,121.98 = 138,539,948.58/x - Step 3: Cross multiply
256,014,631.71x = 353,301,121.98 × 138,539,948.58 - Step 4: Simplify right side
256,014,631.71x = 48,946,319,272,365,512 - Step 5: Solve for x
x = 48,946,319,272,365,512/256,014,631.71 - Step 6: Final answer
x = 191,185,632.42
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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.