Finding the Fourth Proportional to 521,897.80, 720,206.74 and 307,051.68
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Solution
The fourth proportional to 521,897.80, 720,206.74 and 307,051.68 is: 423,724.12
Step by Step Solution
- Step 1: Write the proportion equation
521,897.80 : 720,206.74 = 307,051.68 : x - Step 2: Convert to fraction form
521,897.80/720,206.74 = 307,051.68/x - Step 3: Cross multiply
521,897.80x = 720,206.74 × 307,051.68 - Step 4: Simplify right side
521,897.80x = 221,140,685,176.79 - Step 5: Solve for x
x = 221,140,685,176.79/521,897.80 - Step 6: Final answer
x = 423,724.12
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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.