Finding the Fourth Proportional to 400,672.62, 553,303.44 and 257,681.70
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Solution
The fourth proportional to 400,672.62, 553,303.44 and 257,681.70 is: 355,842.06
Step by Step Solution
- Step 1: Write the proportion equation
400,672.62 : 553,303.44 = 257,681.70 : x - Step 2: Convert to fraction form
400,672.62/553,303.44 = 257,681.70/x - Step 3: Cross multiply
400,672.62x = 553,303.44 × 257,681.70 - Step 4: Simplify right side
400,672.62x = 142,576,171,035.05 - Step 5: Solve for x
x = 142,576,171,035.05/400,672.62 - Step 6: Final answer
x = 355,842.06
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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.