Finding the Fourth Proportional to 348,370,291.20, 522,555,436.80 and 257,671,027.20
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Solution
The fourth proportional to 348,370,291.20, 522,555,436.80 and 257,671,027.20 is: 386,506,540.80
Step by Step Solution
- Step 1: Write the proportion equation
348,370,291.20 : 522,555,436.80 = 257,671,027.20 : x - Step 2: Convert to fraction form
348,370,291.20/522,555,436.80 = 257,671,027.20/x - Step 3: Cross multiply
348,370,291.20x = 522,555,436.80 × 257,671,027.20 - Step 4: Simplify right side
348,370,291.20x = 134,647,396,169,200,672 - Step 5: Solve for x
x = 134,647,396,169,200,672/348,370,291.20 - Step 6: Final answer
x = 386,506,540.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.