Finding the Fourth Proportional to 390,165.84, 585,248.74 and 109,683.09
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Solution
The fourth proportional to 390,165.84, 585,248.74 and 109,683.09 is: 164,524.63
Step by Step Solution
- Step 1: Write the proportion equation
390,165.84 : 585,248.74 = 109,683.09 : x - Step 2: Convert to fraction form
390,165.84/585,248.74 = 109,683.09/x - Step 3: Cross multiply
390,165.84x = 585,248.74 × 109,683.09 - Step 4: Simplify right side
390,165.84x = 64,191,890,221.81 - Step 5: Solve for x
x = 64,191,890,221.81/390,165.84 - Step 6: Final answer
x = 164,524.63
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.