Finding the Fourth Proportional to 212,660,727.60, 318,991,091.40 and 121,709,521.20
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Solution
The fourth proportional to 212,660,727.60, 318,991,091.40 and 121,709,521.20 is: 182,564,281.80
Step by Step Solution
- Step 1: Write the proportion equation
212,660,727.60 : 318,991,091.40 = 121,709,521.20 : x - Step 2: Convert to fraction form
212,660,727.60/318,991,091.40 = 121,709,521.20/x - Step 3: Cross multiply
212,660,727.60x = 318,991,091.40 × 121,709,521.20 - Step 4: Simplify right side
212,660,727.60x = 38,824,253,001,359,432 - Step 5: Solve for x
x = 38,824,253,001,359,432/212,660,727.60 - Step 6: Final answer
x = 182,564,281.80
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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.