Finding the Fourth Proportional to 388,101.60, 535,542.12 and 218,332.08
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Solution
The fourth proportional to 388,101.60, 535,542.12 and 218,332.08 is: 301,276.84
Step by Step Solution
- Step 1: Write the proportion equation
388,101.60 : 535,542.12 = 218,332.08 : x - Step 2: Convert to fraction form
388,101.60/535,542.12 = 218,332.08/x - Step 3: Cross multiply
388,101.60x = 535,542.12 × 218,332.08 - Step 4: Simplify right side
388,101.60x = 116,926,024,987.21 - Step 5: Solve for x
x = 116,926,024,987.21/388,101.60 - Step 6: Final answer
x = 301,276.84
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1.5x scale
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.