Finding the Fourth Proportional to 438,258.63, 657,389.84 and 138,740.66
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Solution
The fourth proportional to 438,258.63, 657,389.84 and 138,740.66 is: 208,111.58
Step by Step Solution
- Step 1: Write the proportion equation
438,258.63 : 657,389.84 = 138,740.66 : x - Step 2: Convert to fraction form
438,258.63/657,389.84 = 138,740.66/x - Step 3: Cross multiply
438,258.63x = 657,389.84 × 138,740.66 - Step 4: Simplify right side
438,258.63x = 91,206,696,298.24 - Step 5: Solve for x
x = 91,206,696,298.24/438,258.63 - Step 6: Final answer
x = 208,111.58
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.