Finding the Fourth Proportional to 400,671.12, 553,301.37 and 257,680.20
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Solution
The fourth proportional to 400,671.12, 553,301.37 and 257,680.20 is: 355,839.99
Step by Step Solution
- Step 1: Write the proportion equation
400,671.12 : 553,301.37 = 257,680.20 : x - Step 2: Convert to fraction form
400,671.12/553,301.37 = 257,680.20/x - Step 3: Cross multiply
400,671.12x = 553,301.37 × 257,680.20 - Step 4: Simplify right side
400,671.12x = 142,574,807,681.87 - Step 5: Solve for x
x = 142,574,807,681.87/400,671.12 - Step 6: Final answer
x = 355,839.99
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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.