Finding the Fourth Proportional to 290,121,515.60, 400,363,935.98 and 157,960,996.26
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Solution
The fourth proportional to 290,121,515.60, 400,363,935.98 and 157,960,996.26 is: 217,984,130.07
Step by Step Solution
- Step 1: Write the proportion equation
290,121,515.60 : 400,363,935.98 = 157,960,996.26 : x - Step 2: Convert to fraction form
290,121,515.60/400,363,935.98 = 157,960,996.26/x - Step 3: Cross multiply
290,121,515.60x = 400,363,935.98 × 157,960,996.26 - Step 4: Simplify right side
290,121,515.60x = 63,241,886,193,975,656 - Step 5: Solve for x
x = 63,241,886,193,975,656/290,121,515.60 - Step 6: Final answer
x = 217,984,130.07
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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.