Finding the Fourth Proportional to 257,564.51, 355,460.87 and 142,880.11
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Solution
The fourth proportional to 257,564.51, 355,460.87 and 142,880.11 is: 197,186.66
Step by Step Solution
- Step 1: Write the proportion equation
257,564.51 : 355,460.87 = 142,880.11 : x - Step 2: Convert to fraction form
257,564.51/355,460.87 = 142,880.11/x - Step 3: Cross multiply
257,564.51x = 355,460.87 × 142,880.11 - Step 4: Simplify right side
257,564.51x = 50,788,286,603.24 - Step 5: Solve for x
x = 50,788,286,603.24/257,564.51 - Step 6: Final answer
x = 197,186.66
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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.