Finding the Fourth Proportional to 220,170,121.30, 330,255,181.95 and 66,815,931.70
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Solution
The fourth proportional to 220,170,121.30, 330,255,181.95 and 66,815,931.70 is: 100,223,897.55
Step by Step Solution
- Step 1: Write the proportion equation
220,170,121.30 : 330,255,181.95 = 66,815,931.70 : x - Step 2: Convert to fraction form
220,170,121.30/330,255,181.95 = 66,815,931.70/x - Step 3: Cross multiply
220,170,121.30x = 330,255,181.95 × 66,815,931.70 - Step 4: Simplify right side
220,170,121.30x = 22,066,307,680,742,272 - Step 5: Solve for x
x = 22,066,307,680,742,272/220,170,121.30 - Step 6: Final answer
x = 100,223,897.55
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1.5x scale
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.