Finding the Fourth Proportional to 280,580,157.33, 387,214,112.67 and 155,130,031.95
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Solution
The fourth proportional to 280,580,157.33, 387,214,112.67 and 155,130,031.95 is: 214,086,905.65
Step by Step Solution
- Step 1: Write the proportion equation
280,580,157.33 : 387,214,112.67 = 155,130,031.95 : x - Step 2: Convert to fraction form
280,580,157.33/387,214,112.67 = 155,130,031.95/x - Step 3: Cross multiply
280,580,157.33x = 387,214,112.67 × 155,130,031.95 - Step 4: Simplify right side
280,580,157.33x = 60,068,537,669,988,000 - Step 5: Solve for x
x = 60,068,537,669,988,000/280,580,157.33 - Step 6: Final answer
x = 214,086,905.65
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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.