Finding the Fourth Proportional to 257,237,670.76, 354,991,214.25 and 139,764,962.81
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Solution
The fourth proportional to 257,237,670.76, 354,991,214.25 and 139,764,962.81 is: 192,877,402.88
Step by Step Solution
- Step 1: Write the proportion equation
257,237,670.76 : 354,991,214.25 = 139,764,962.81 : x - Step 2: Convert to fraction form
257,237,670.76/354,991,214.25 = 139,764,962.81/x - Step 3: Cross multiply
257,237,670.76x = 354,991,214.25 × 139,764,962.81 - Step 4: Simplify right side
257,237,670.76x = 49,615,333,858,415,472 - Step 5: Solve for x
x = 49,615,333,858,415,472/257,237,670.76 - Step 6: Final answer
x = 192,877,402.88
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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.