Finding the Fourth Proportional to 396,522,419.76, 547,215,707.04 and 237,778,387.68
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Solution
The fourth proportional to 396,522,419.76, 547,215,707.04 and 237,778,387.68 is: 328,143,030.63
Step by Step Solution
- Step 1: Write the proportion equation
396,522,419.76 : 547,215,707.04 = 237,778,387.68 : x - Step 2: Convert to fraction form
396,522,419.76/547,215,707.04 = 237,778,387.68/x - Step 3: Cross multiply
396,522,419.76x = 547,215,707.04 × 237,778,387.68 - Step 4: Simplify right side
396,522,419.76x = 130,116,068,533,142,416 - Step 5: Solve for x
x = 130,116,068,533,142,416/396,522,419.76 - Step 6: Final answer
x = 328,143,030.63
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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.