Finding the Fourth Proportional to 285,312.03, 393,742.47 and 157,987.63
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Solution
The fourth proportional to 285,312.03, 393,742.47 and 157,987.63 is: 218,029.50
Step by Step Solution
- Step 1: Write the proportion equation
285,312.03 : 393,742.47 = 157,987.63 : x - Step 2: Convert to fraction form
285,312.03/393,742.47 = 157,987.63/x - Step 3: Cross multiply
285,312.03x = 393,742.47 × 157,987.63 - Step 4: Simplify right side
285,312.03x = 62,206,439,273.74 - Step 5: Solve for x
x = 62,206,439,273.74/285,312.03 - Step 6: Final answer
x = 218,029.50
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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.