Finding the Fourth Proportional to 405,743,973.96, 559,939,180.30 and 229,528,435.08
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Solution
The fourth proportional to 405,743,973.96, 559,939,180.30 and 229,528,435.08 is: 316,756,309.50
Step by Step Solution
- Step 1: Write the proportion equation
405,743,973.96 : 559,939,180.30 = 229,528,435.08 : x - Step 2: Convert to fraction form
405,743,973.96/559,939,180.30 = 229,528,435.08/x - Step 3: Cross multiply
405,743,973.96x = 559,939,180.30 × 229,528,435.08 - Step 4: Simplify right side
405,743,973.96x = 128,521,963,794,236,960 - Step 5: Solve for x
x = 128,521,963,794,236,960/405,743,973.96 - Step 6: Final answer
x = 316,756,309.50
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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.