Finding the Fourth Proportional to 388,636.23, 536,303.84 and 216,545.30
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Solution
The fourth proportional to 388,636.23, 536,303.84 and 216,545.30 is: 298,824.62
Step by Step Solution
- Step 1: Write the proportion equation
388,636.23 : 536,303.84 = 216,545.30 : x - Step 2: Convert to fraction form
388,636.23/536,303.84 = 216,545.30/x - Step 3: Cross multiply
388,636.23x = 536,303.84 × 216,545.30 - Step 4: Simplify right side
388,636.23x = 116,134,074,841.23 - Step 5: Solve for x
x = 116,134,074,841.23/388,636.23 - Step 6: Final answer
x = 298,824.62
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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.