Finding the Fourth Proportional to 285,810,948.18, 394,425,908.21 and 160,372,422.71
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Solution
The fourth proportional to 285,810,948.18, 394,425,908.21 and 160,372,422.71 is: 221,317,758.75
Step by Step Solution
- Step 1: Write the proportion equation
285,810,948.18 : 394,425,908.21 = 160,372,422.71 : x - Step 2: Convert to fraction form
285,810,948.18/394,425,908.21 = 160,372,422.71/x - Step 3: Cross multiply
285,810,948.18x = 394,425,908.21 × 160,372,422.71 - Step 4: Simplify right side
285,810,948.18x = 63,255,038,476,455,792 - Step 5: Solve for x
x = 63,255,038,476,455,792/285,810,948.18 - Step 6: Final answer
x = 221,317,758.75
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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.