Finding the Fourth Proportional to 245,400.56, 338,652.36 and 137,970.80
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Solution
The fourth proportional to 245,400.56, 338,652.36 and 137,970.80 is: 190,399.47
Step by Step Solution
- Step 1: Write the proportion equation
245,400.56 : 338,652.36 = 137,970.80 : x - Step 2: Convert to fraction form
245,400.56/338,652.36 = 137,970.80/x - Step 3: Cross multiply
245,400.56x = 338,652.36 × 137,970.80 - Step 4: Simplify right side
245,400.56x = 46,724,137,031.09 - Step 5: Solve for x
x = 46,724,137,031.09/245,400.56 - Step 6: Final answer
x = 190,399.47
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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.