Finding the Fourth Proportional to 402,672.24, 555,688.80 and 221,402.70
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Solution
The fourth proportional to 402,672.24, 555,688.80 and 221,402.70 is: 305,536.34
Step by Step Solution
- Step 1: Write the proportion equation
402,672.24 : 555,688.80 = 221,402.70 : x - Step 2: Convert to fraction form
402,672.24/555,688.80 = 221,402.70/x - Step 3: Cross multiply
402,672.24x = 555,688.80 × 221,402.70 - Step 4: Simplify right side
402,672.24x = 123,031,000,679.76 - Step 5: Solve for x
x = 123,031,000,679.76/402,672.24 - Step 6: Final answer
x = 305,536.34
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1.5x scale
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.