Finding the Fourth Proportional to 319,627,201.20, 479,440,801.80 and 147,440,317.20
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Solution
The fourth proportional to 319,627,201.20, 479,440,801.80 and 147,440,317.20 is: 221,160,475.80
Step by Step Solution
- Step 1: Write the proportion equation
319,627,201.20 : 479,440,801.80 = 147,440,317.20 : x - Step 2: Convert to fraction form
319,627,201.20/479,440,801.80 = 147,440,317.20/x - Step 3: Cross multiply
319,627,201.20x = 479,440,801.80 × 147,440,317.20 - Step 4: Simplify right side
319,627,201.20x = 70,688,903,896,014,328 - Step 5: Solve for x
x = 70,688,903,896,014,328/319,627,201.20 - Step 6: Final answer
x = 221,160,475.80
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1.5x scale
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.