Finding the Fourth Proportional to 266,121,389.60, 399,480,682.80 and 205,804,512.80
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Solution
The fourth proportional to 266,121,389.60, 399,480,682.80 and 205,804,512.80 is: 308,937,689.75
Step by Step Solution
- Step 1: Write the proportion equation
266,121,389.60 : 399,480,682.80 = 205,804,512.80 : x - Step 2: Convert to fraction form
266,121,389.60/399,480,682.80 = 205,804,512.80/x - Step 3: Cross multiply
266,121,389.60x = 399,480,682.80 × 205,804,512.80 - Step 4: Simplify right side
266,121,389.60x = 82,214,927,296,665,344 - Step 5: Solve for x
x = 82,214,927,296,665,344/266,121,389.60 - Step 6: Final answer
x = 308,937,689.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.