Finding the Fourth Proportional to 330,721,208.88, 495,748,332.36 and 207,987,240.48
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Solution
The fourth proportional to 330,721,208.88, 495,748,332.36 and 207,987,240.48 is: 311,771,137.90
Step by Step Solution
- Step 1: Write the proportion equation
330,721,208.88 : 495,748,332.36 = 207,987,240.48 : x - Step 2: Convert to fraction form
330,721,208.88/495,748,332.36 = 207,987,240.48/x - Step 3: Cross multiply
330,721,208.88x = 495,748,332.36 × 207,987,240.48 - Step 4: Simplify right side
330,721,208.88x = 103,109,327,620,118,288 - Step 5: Solve for x
x = 103,109,327,620,118,288/330,721,208.88 - Step 6: Final answer
x = 311,771,137.90
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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.