Finding the Fourth Proportional to 278,502,912.05, 417,754,368.08 and 74,030,987.30
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Solution
The fourth proportional to 278,502,912.05, 417,754,368.08 and 74,030,987.30 is: 111,046,480.95
Step by Step Solution
- Step 1: Write the proportion equation
278,502,912.05 : 417,754,368.08 = 74,030,987.30 : x - Step 2: Convert to fraction form
278,502,912.05/417,754,368.08 = 74,030,987.30/x - Step 3: Cross multiply
278,502,912.05x = 417,754,368.08 × 74,030,987.30 - Step 4: Simplify right side
278,502,912.05x = 30,926,768,317,479,848 - Step 5: Solve for x
x = 30,926,768,317,479,848/278,502,912.05 - Step 6: Final answer
x = 111,046,480.95
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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.