Finding the Fourth Proportional to 390,665,064.95, 539,103,840.68 and 221,115,662.42
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Solution
The fourth proportional to 390,665,064.95, 539,103,840.68 and 221,115,662.42 is: 305,131,719.06
Step by Step Solution
- Step 1: Write the proportion equation
390,665,064.95 : 539,103,840.68 = 221,115,662.42 : x - Step 2: Convert to fraction form
390,665,064.95/539,103,840.68 = 221,115,662.42/x - Step 3: Cross multiply
390,665,064.95x = 539,103,840.68 × 221,115,662.42 - Step 4: Simplify right side
390,665,064.95x = 119,204,302,846,067,104 - Step 5: Solve for x
x = 119,204,302,846,067,104/390,665,064.95 - Step 6: Final answer
x = 305,131,719.06
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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.