Finding the Fourth Proportional to 283,681.20, 425,521.80 and 257,437.20
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Solution
The fourth proportional to 283,681.20, 425,521.80 and 257,437.20 is: 386,155.80
Step by Step Solution
- Step 1: Write the proportion equation
283,681.20 : 425,521.80 = 257,437.20 : x - Step 2: Convert to fraction form
283,681.20/425,521.80 = 257,437.20/x - Step 3: Cross multiply
283,681.20x = 425,521.80 × 257,437.20 - Step 4: Simplify right side
283,681.20x = 109,545,140,730.96 - Step 5: Solve for x
x = 109,545,140,730.96/283,681.20 - Step 6: Final answer
x = 386,155.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.