Finding the Fourth Proportional to 257,888.48, 355,876.80 and 143,172.08
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Solution
The fourth proportional to 257,888.48, 355,876.80 and 143,172.08 is: 197,572.31
Step by Step Solution
- Step 1: Write the proportion equation
257,888.48 : 355,876.80 = 143,172.08 : x - Step 2: Convert to fraction form
257,888.48/355,876.80 = 143,172.08/x - Step 3: Cross multiply
257,888.48x = 355,876.80 × 143,172.08 - Step 4: Simplify right side
257,888.48x = 50,951,621,679.74 - Step 5: Solve for x
x = 50,951,621,679.74/257,888.48 - Step 6: Final answer
x = 197,572.31
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1.5x scale
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.