Finding the Fourth Proportional to 386,401.47, 533,133.14 and 223,017.99
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Solution
The fourth proportional to 386,401.47, 533,133.14 and 223,017.99 is: 307,706.59
Step by Step Solution
- Step 1: Write the proportion equation
386,401.47 : 533,133.14 = 223,017.99 : x - Step 2: Convert to fraction form
386,401.47/533,133.14 = 223,017.99/x - Step 3: Cross multiply
386,401.47x = 533,133.14 × 223,017.99 - Step 4: Simplify right side
386,401.47x = 118,898,280,170.10 - Step 5: Solve for x
x = 118,898,280,170.10/386,401.47 - Step 6: Final answer
x = 307,706.59
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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.