Finding the Fourth Proportional to 257,768,057.12, 355,727,472.56 and 140,300,995.68
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Solution
The fourth proportional to 257,768,057.12, 355,727,472.56 and 140,300,995.68 is: 193,619,485.47
Step by Step Solution
- Step 1: Write the proportion equation
257,768,057.12 : 355,727,472.56 = 140,300,995.68 : x - Step 2: Convert to fraction form
257,768,057.12/355,727,472.56 = 140,300,995.68/x - Step 3: Cross multiply
257,768,057.12x = 355,727,472.56 × 140,300,995.68 - Step 4: Simplify right side
257,768,057.12x = 49,908,918,590,196,376 - Step 5: Solve for x
x = 49,908,918,590,196,376/257,768,057.12 - Step 6: Final answer
x = 193,619,485.47
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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.