Finding the Fourth Proportional to 279,038,690.22, 385,070,336.64 and 153,588,203.98
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Solution
The fourth proportional to 279,038,690.22, 385,070,336.64 and 153,588,203.98 is: 211,950,039.49
Step by Step Solution
- Step 1: Write the proportion equation
279,038,690.22 : 385,070,336.64 = 153,588,203.98 : x - Step 2: Convert to fraction form
279,038,690.22/385,070,336.64 = 153,588,203.98/x - Step 3: Cross multiply
279,038,690.22x = 385,070,336.64 × 153,588,203.98 - Step 4: Simplify right side
279,038,690.22x = 59,142,261,410,511,584 - Step 5: Solve for x
x = 59,142,261,410,511,584/279,038,690.22 - Step 6: Final answer
x = 211,950,039.49
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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.