Finding the Fourth Proportional to 257,720,743.48, 355,654,678.62 and 141,827,239.48
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Solution
The fourth proportional to 257,720,743.48, 355,654,678.62 and 141,827,239.48 is: 195,721,619.44
Step by Step Solution
- Step 1: Write the proportion equation
257,720,743.48 : 355,654,678.62 = 141,827,239.48 : x - Step 2: Convert to fraction form
257,720,743.48/355,654,678.62 = 141,827,239.48/x - Step 3: Cross multiply
257,720,743.48x = 355,654,678.62 × 141,827,239.48 - Step 4: Simplify right side
257,720,743.48x = 50,441,521,276,821,176 - Step 5: Solve for x
x = 50,441,521,276,821,176/257,720,743.48 - Step 6: Final answer
x = 195,721,619.44
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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.