Finding the Fourth Proportional to 278,636,327.24, 384,518,377.62 and 153,190,657.64
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Solution
The fourth proportional to 278,636,327.24, 384,518,377.62 and 153,190,657.64 is: 211,403,242.81
Step by Step Solution
- Step 1: Write the proportion equation
278,636,327.24 : 384,518,377.62 = 153,190,657.64 : x - Step 2: Convert to fraction form
278,636,327.24/384,518,377.62 = 153,190,657.64/x - Step 3: Cross multiply
278,636,327.24x = 384,518,377.62 × 153,190,657.64 - Step 4: Simplify right side
278,636,327.24x = 58,904,623,142,273,656 - Step 5: Solve for x
x = 58,904,623,142,273,656/278,636,327.24 - Step 6: Final answer
x = 211,403,242.81
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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.