Finding the Fourth Proportional to 386,973,485.08, 534,023,412.06 and 213,133,229.08
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Solution
The fourth proportional to 386,973,485.08, 534,023,412.06 and 213,133,229.08 is: 294,123,857.59
Step by Step Solution
- Step 1: Write the proportion equation
386,973,485.08 : 534,023,412.06 = 213,133,229.08 : x - Step 2: Convert to fraction form
386,973,485.08/534,023,412.06 = 213,133,229.08/x - Step 3: Cross multiply
386,973,485.08x = 534,023,412.06 × 213,133,229.08 - Step 4: Simplify right side
386,973,485.08x = 113,818,134,216,667,216 - Step 5: Solve for x
x = 113,818,134,216,667,216/386,973,485.08 - Step 6: Final answer
x = 294,123,857.59
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.