Finding the Fourth Proportional to 398,485,148.24, 549,923,178.84 and 231,208,778
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Solution
The fourth proportional to 398,485,148.24, 549,923,178.84 and 231,208,778 is: 319,076,047.71
Step by Step Solution
- Step 1: Write the proportion equation
398,485,148.24 : 549,923,178.84 = 231,208,778 : x - Step 2: Convert to fraction form
398,485,148.24/549,923,178.84 = 231,208,778/x - Step 3: Cross multiply
398,485,148.24x = 549,923,178.84 × 231,208,778 - Step 4: Simplify right side
398,485,148.24x = 127,147,066,173,471,872 - Step 5: Solve for x
x = 127,147,066,173,471,872/398,485,148.24 - Step 6: Final answer
x = 319,076,047.71
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.