Finding the Fourth Proportional to 386,572,325.12, 533,469,895.92 and 212,732,069.12
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Solution
The fourth proportional to 386,572,325.12, 533,469,895.92 and 212,732,069.12 is: 293,570,303.40
Step by Step Solution
- Step 1: Write the proportion equation
386,572,325.12 : 533,469,895.92 = 212,732,069.12 : x - Step 2: Convert to fraction form
386,572,325.12/533,469,895.92 = 212,732,069.12/x - Step 3: Cross multiply
386,572,325.12x = 533,469,895.92 × 212,732,069.12 - Step 4: Simplify right side
386,572,325.12x = 113,486,154,772,292,656 - Step 5: Solve for x
x = 113,486,154,772,292,656/386,572,325.12 - Step 6: Final answer
x = 293,570,303.40
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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.