Finding the Fourth Proportional to 316,237.68, 436,156.80 and 238,971.36
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Solution
The fourth proportional to 316,237.68, 436,156.80 and 238,971.36 is: 329,590.65
Step by Step Solution
- Step 1: Write the proportion equation
316,237.68 : 436,156.80 = 238,971.36 : x - Step 2: Convert to fraction form
316,237.68/436,156.80 = 238,971.36/x - Step 3: Cross multiply
316,237.68x = 436,156.80 × 238,971.36 - Step 4: Simplify right side
316,237.68x = 104,228,983,669.25 - Step 5: Solve for x
x = 104,228,983,669.25/316,237.68 - Step 6: Final answer
x = 329,590.65
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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.