Finding the Fourth Proportional to 278,774.68, 384,681.30 and 157,891.84
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Solution
The fourth proportional to 278,774.68, 384,681.30 and 157,891.84 is: 217,875.02
Step by Step Solution
- Step 1: Write the proportion equation
278,774.68 : 384,681.30 = 157,891.84 : x - Step 2: Convert to fraction form
278,774.68/384,681.30 = 157,891.84/x - Step 3: Cross multiply
278,774.68x = 384,681.30 × 157,891.84 - Step 4: Simplify right side
278,774.68x = 60,738,038,270.59 - Step 5: Solve for x
x = 60,738,038,270.59/278,774.68 - Step 6: Final answer
x = 217,875.02
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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.