Finding the Fourth Proportional to 390,337.84, 538,676.76 and 220,568.08
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Solution
The fourth proportional to 390,337.84, 538,676.76 and 220,568.08 is: 304,389.91
Step by Step Solution
- Step 1: Write the proportion equation
390,337.84 : 538,676.76 = 220,568.08 : x - Step 2: Convert to fraction form
390,337.84/538,676.76 = 220,568.08/x - Step 3: Cross multiply
390,337.84x = 538,676.76 × 220,568.08 - Step 4: Simplify right side
390,337.84x = 118,814,898,693.82 - Step 5: Solve for x
x = 118,814,898,693.82/390,337.84 - Step 6: Final answer
x = 304,389.91
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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.