Finding the Fourth Proportional to 338,956.74, 508,132.98 and 128,742.30
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Solution
The fourth proportional to 338,956.74, 508,132.98 and 128,742.30 is: 192,998.70
Step by Step Solution
- Step 1: Write the proportion equation
338,956.74 : 508,132.98 = 128,742.30 : x - Step 2: Convert to fraction form
338,956.74/508,132.98 = 128,742.30/x - Step 3: Cross multiply
338,956.74x = 508,132.98 × 128,742.30 - Step 4: Simplify right side
338,956.74x = 65,418,208,551.05 - Step 5: Solve for x
x = 65,418,208,551.05/338,956.74 - Step 6: Final answer
x = 192,998.70
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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.