Finding the Fourth Proportional to 212,778,847.40, 319,309,988.70 and 97,704,156.20
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Solution
The fourth proportional to 212,778,847.40, 319,309,988.70 and 97,704,156.20 is: 146,621,308.43
Step by Step Solution
- Step 1: Write the proportion equation
212,778,847.40 : 319,309,988.70 = 97,704,156.20 : x - Step 2: Convert to fraction form
212,778,847.40/319,309,988.70 = 97,704,156.20/x - Step 3: Cross multiply
212,778,847.40x = 319,309,988.70 × 97,704,156.20 - Step 4: Simplify right side
212,778,847.40x = 31,197,913,012,165,036 - Step 5: Solve for x
x = 31,197,913,012,165,036/212,778,847.40 - Step 6: Final answer
x = 146,621,308.43
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.