Finding the Fourth Proportional to 290,903,654.48, 401,455,521.14 and 158,753,163.06
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Solution
The fourth proportional to 290,903,654.48, 401,455,521.14 and 158,753,163.06 is: 219,083,991.65
Step by Step Solution
- Step 1: Write the proportion equation
290,903,654.48 : 401,455,521.14 = 158,753,163.06 : x - Step 2: Convert to fraction form
290,903,654.48/401,455,521.14 = 158,753,163.06/x - Step 3: Cross multiply
290,903,654.48x = 401,455,521.14 × 158,753,163.06 - Step 4: Simplify right side
290,903,654.48x = 63,732,333,808,081,928 - Step 5: Solve for x
x = 63,732,333,808,081,928/290,903,654.48 - Step 6: Final answer
x = 219,083,991.65
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.