Finding the Fourth Proportional to 387,781.41, 581,679.40 and 121,536.03
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Solution
The fourth proportional to 387,781.41, 581,679.40 and 121,536.03 is: 182,306.33
Step by Step Solution
- Step 1: Write the proportion equation
387,781.41 : 581,679.40 = 121,536.03 : x - Step 2: Convert to fraction form
387,781.41/581,679.40 = 121,536.03/x - Step 3: Cross multiply
387,781.41x = 581,679.40 × 121,536.03 - Step 4: Simplify right side
387,781.41x = 70,695,005,008.78 - Step 5: Solve for x
x = 70,695,005,008.78/387,781.41 - Step 6: Final answer
x = 182,306.33
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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.