Finding the Fourth Proportional to 280,965,695.99, 387,724,243.06 and 155,523,033.75
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Solution
The fourth proportional to 280,965,695.99, 387,724,243.06 and 155,523,033.75 is: 214,617,127.28
Step by Step Solution
- Step 1: Write the proportion equation
280,965,695.99 : 387,724,243.06 = 155,523,033.75 : x - Step 2: Convert to fraction form
280,965,695.99/387,724,243.06 = 155,523,033.75/x - Step 3: Cross multiply
280,965,695.99x = 387,724,243.06 × 155,523,033.75 - Step 4: Simplify right side
280,965,695.99x = 60,300,050,538,724,776 - Step 5: Solve for x
x = 60,300,050,538,724,776/280,965,695.99 - Step 6: Final answer
x = 214,617,127.28
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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.