Finding the Fourth Proportional to 390,969.63, 586,502.73 and 138,198.02
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Solution
The fourth proportional to 390,969.63, 586,502.73 and 138,198.02 is: 207,314.09
Step by Step Solution
- Step 1: Write the proportion equation
390,969.63 : 586,502.73 = 138,198.02 : x - Step 2: Convert to fraction form
390,969.63/586,502.73 = 138,198.02/x - Step 3: Cross multiply
390,969.63x = 586,502.73 × 138,198.02 - Step 4: Simplify right side
390,969.63x = 81,053,513,078.08 - Step 5: Solve for x
x = 81,053,513,078.08/390,969.63 - Step 6: Final answer
x = 207,314.09
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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.