Finding the Fourth Proportional to 369,395,147.64, 509,757,430.86 and 202,130,720.76
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Solution
The fourth proportional to 369,395,147.64, 509,757,430.86 and 202,130,720.76 is: 278,936,086.66
Step by Step Solution
- Step 1: Write the proportion equation
369,395,147.64 : 509,757,430.86 = 202,130,720.76 : x - Step 2: Convert to fraction form
369,395,147.64/509,757,430.86 = 202,130,720.76/x - Step 3: Cross multiply
369,395,147.64x = 509,757,430.86 × 202,130,720.76 - Step 4: Simplify right side
369,395,147.64x = 103,037,636,912,497,664 - Step 5: Solve for x
x = 103,037,636,912,497,664/369,395,147.64 - Step 6: Final answer
x = 278,936,086.66
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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.