Finding the Fourth Proportional to 390,468,237.08, 585,394,181.71 and 193,595,909.12
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Solution
The fourth proportional to 390,468,237.08, 585,394,181.71 and 193,595,909.12 is: 290,241,069.67
Step by Step Solution
- Step 1: Write the proportion equation
390,468,237.08 : 585,394,181.71 = 193,595,909.12 : x - Step 2: Convert to fraction form
390,468,237.08/585,394,181.71 = 193,595,909.12/x - Step 3: Cross multiply
390,468,237.08x = 585,394,181.71 × 193,595,909.12 - Step 4: Simplify right side
390,468,237.08x = 113,329,918,801,705,936 - Step 5: Solve for x
x = 113,329,918,801,705,936/390,468,237.08 - Step 6: Final answer
x = 290,241,069.67
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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.