Finding the Fourth Proportional to 403,708,619.55, 557,118,139.11 and 218,069,717.25
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Solution
The fourth proportional to 403,708,619.55, 557,118,139.11 and 218,069,717.25 is: 300,936,341.68
Step by Step Solution
- Step 1: Write the proportion equation
403,708,619.55 : 557,118,139.11 = 218,069,717.25 : x - Step 2: Convert to fraction form
403,708,619.55/557,118,139.11 = 218,069,717.25/x - Step 3: Cross multiply
403,708,619.55x = 557,118,139.11 × 218,069,717.25 - Step 4: Simplify right side
403,708,619.55x = 121,490,595,070,563,872 - Step 5: Solve for x
x = 121,490,595,070,563,872/403,708,619.55 - Step 6: Final answer
x = 300,936,341.68
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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.