Finding the Fourth Proportional to 256,244,707.78, 353,615,935.98 and 138,767,349.67
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Solution
The fourth proportional to 256,244,707.78, 353,615,935.98 and 138,767,349.67 is: 191,497,989.02
Step by Step Solution
- Step 1: Write the proportion equation
256,244,707.78 : 353,615,935.98 = 138,767,349.67 : x - Step 2: Convert to fraction form
256,244,707.78/353,615,935.98 = 138,767,349.67/x - Step 3: Cross multiply
256,244,707.78x = 353,615,935.98 × 138,767,349.67 - Step 4: Simplify right side
256,244,707.78x = 49,070,346,237,020,992 - Step 5: Solve for x
x = 49,070,346,237,020,992/256,244,707.78 - Step 6: Final answer
x = 191,497,989.02
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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.