Finding the Fourth Proportional to 280,580,149.34, 387,214,101.61 and 155,130,023.96
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Solution
The fourth proportional to 280,580,149.34, 387,214,101.61 and 155,130,023.96 is: 214,086,894.61
Step by Step Solution
- Step 1: Write the proportion equation
280,580,149.34 : 387,214,101.61 = 155,130,023.96 : x - Step 2: Convert to fraction form
280,580,149.34/387,214,101.61 = 155,130,023.96/x - Step 3: Cross multiply
280,580,149.34x = 387,214,101.61 × 155,130,023.96 - Step 4: Simplify right side
280,580,149.34x = 60,068,532,860,409,184 - Step 5: Solve for x
x = 60,068,532,860,409,184/280,580,149.34 - Step 6: Final answer
x = 214,086,894.61
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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.