Finding the Fourth Proportional to 372,102,973.74, 513,502,110.63 and 207,129,515.58
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Solution
The fourth proportional to 372,102,973.74, 513,502,110.63 and 207,129,515.58 is: 285,838,735.32
Step by Step Solution
- Step 1: Write the proportion equation
372,102,973.74 : 513,502,110.63 = 207,129,515.58 : x - Step 2: Convert to fraction form
372,102,973.74/513,502,110.63 = 207,129,515.58/x - Step 3: Cross multiply
372,102,973.74x = 513,502,110.63 × 207,129,515.58 - Step 4: Simplify right side
372,102,973.74x = 106,361,443,424,099,472 - Step 5: Solve for x
x = 106,361,443,424,099,472/372,102,973.74 - Step 6: Final answer
x = 285,838,735.32
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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.