Finding the Fourth Proportional to 420,252.78, 579,946.12 and 238,964.74
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Solution
The fourth proportional to 420,252.78, 579,946.12 and 238,964.74 is: 329,769.80
Step by Step Solution
- Step 1: Write the proportion equation
420,252.78 : 579,946.12 = 238,964.74 : x - Step 2: Convert to fraction form
420,252.78/579,946.12 = 238,964.74/x - Step 3: Cross multiply
420,252.78x = 579,946.12 × 238,964.74 - Step 4: Simplify right side
420,252.78x = 138,586,673,779.81 - Step 5: Solve for x
x = 138,586,673,779.81/420,252.78 - Step 6: Final answer
x = 329,769.80
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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.